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Finding the Fourth Proportional to 717,944.80, 990,761.52 and 395,654.80

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Solution

The fourth proportional to 717,944.80, 990,761.52 and 395,654.80 is: 546,002.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,944.80 : 990,761.52 = 395,654.80 : x
  2. Step 2: Convert to fraction form
    717,944.80/990,761.52 = 395,654.80/x
  3. Step 3: Cross multiply
    717,944.80x = 990,761.52 × 395,654.80
  4. Step 4: Simplify right side
    717,944.80x = 391,999,551,043.30
  5. Step 5: Solve for x
    x = 391,999,551,043.30/717,944.80
  6. Step 6: Final answer
    x = 546,002.35

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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.