Home / 1,353,837,689.77-1,868,016,240.14-781,610,826.19

Finding the Fourth Proportional to 1,353,837,689.77, 1,868,016,240.14 and 781,610,826.19

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Solution

The fourth proportional to 1,353,837,689.77, 1,868,016,240.14 and 781,610,826.19 is: 1,078,461,419.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,837,689.77 : 1,868,016,240.14 = 781,610,826.19 : x
  2. Step 2: Convert to fraction form
    1,353,837,689.77/1,868,016,240.14 = 781,610,826.19/x
  3. Step 3: Cross multiply
    1,353,837,689.77x = 1,868,016,240.14 × 781,610,826.19
  4. Step 4: Simplify right side
    1,353,837,689.77x = 1,460,061,716,791,510,784
  5. Step 5: Solve for x
    x = 1,460,061,716,791,510,784/1,353,837,689.77
  6. Step 6: Final answer
    x = 1,078,461,419.58

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Double scale
Find fourth proportional to 1,353,837,690.77, 1,868,016,241.52 and 781,610,827.19
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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.