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Finding the Fourth Proportional to 539,087.20, 807,561.60 and 472,602.40

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Solution

The fourth proportional to 539,087.20, 807,561.60 and 472,602.40 is: 707,966.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,087.20 : 807,561.60 = 472,602.40 : x
  2. Step 2: Convert to fraction form
    539,087.20/807,561.60 = 472,602.40/x
  3. Step 3: Cross multiply
    539,087.20x = 807,561.60 × 472,602.40
  4. Step 4: Simplify right side
    539,087.20x = 381,655,550,307.84
  5. Step 5: Solve for x
    x = 381,655,550,307.84/539,087.20
  6. Step 6: Final answer
    x = 707,966.26

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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.