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Finding the Fourth Proportional to 532,139.20, 798,208.80 and 521,641.60

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Solution

The fourth proportional to 532,139.20, 798,208.80 and 521,641.60 is: 782,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,139.20 : 798,208.80 = 521,641.60 : x
  2. Step 2: Convert to fraction form
    532,139.20/798,208.80 = 521,641.60/x
  3. Step 3: Cross multiply
    532,139.20x = 798,208.80 × 521,641.60
  4. Step 4: Simplify right side
    532,139.20x = 416,378,915,566.08
  5. Step 5: Solve for x
    x = 416,378,915,566.08/532,139.20
  6. Step 6: Final answer
    x = 782,462.40

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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.