Home / 1,353,837,682.21-1,868,016,229.72-781,610,818.63

Finding the Fourth Proportional to 1,353,837,682.21, 1,868,016,229.72 and 781,610,818.63

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Solution

The fourth proportional to 1,353,837,682.21, 1,868,016,229.72 and 781,610,818.63 is: 1,078,461,409.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,837,682.21 : 1,868,016,229.72 = 781,610,818.63 : x
  2. Step 2: Convert to fraction form
    1,353,837,682.21/1,868,016,229.72 = 781,610,818.63/x
  3. Step 3: Cross multiply
    1,353,837,682.21x = 1,868,016,229.72 × 781,610,818.63
  4. Step 4: Simplify right side
    1,353,837,682.21x = 1,460,061,694,527,956,480
  5. Step 5: Solve for x
    x = 1,460,061,694,527,956,480/1,353,837,682.21
  6. Step 6: Final answer
    x = 1,078,461,409.16

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Half scale
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Double scale
Find fourth proportional to 1,353,837,683.21, 1,868,016,231.10 and 781,610,819.63
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.