Home / 885,800.40-1,328,830.20-286,659.60

Finding the Fourth Proportional to 885,800.40, 1,328,830.20 and 286,659.60

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Solution

The fourth proportional to 885,800.40, 1,328,830.20 and 286,659.60 is: 430,031.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,800.40 : 1,328,830.20 = 286,659.60 : x
  2. Step 2: Convert to fraction form
    885,800.40/1,328,830.20 = 286,659.60/x
  3. Step 3: Cross multiply
    885,800.40x = 1,328,830.20 × 286,659.60
  4. Step 4: Simplify right side
    885,800.40x = 380,921,933,599.92
  5. Step 5: Solve for x
    x = 380,921,933,599.92/885,800.40
  6. Step 6: Final answer
    x = 430,031.34

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.