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Finding the Fourth Proportional to 531,796.80, 797,695.20 and 485,140.80

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Solution

The fourth proportional to 531,796.80, 797,695.20 and 485,140.80 is: 727,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,796.80 : 797,695.20 = 485,140.80 : x
  2. Step 2: Convert to fraction form
    531,796.80/797,695.20 = 485,140.80/x
  3. Step 3: Cross multiply
    531,796.80x = 797,695.20 × 485,140.80
  4. Step 4: Simplify right side
    531,796.80x = 386,994,487,484.16
  5. Step 5: Solve for x
    x = 386,994,487,484.16/531,796.80
  6. Step 6: Final answer
    x = 727,711.20

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Similar ratio
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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.