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Finding the Fourth Proportional to 560,471.78, 773,468.15 and 318,789.18

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Solution

The fourth proportional to 560,471.78, 773,468.15 and 318,789.18 is: 439,938.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,471.78 : 773,468.15 = 318,789.18 : x
  2. Step 2: Convert to fraction form
    560,471.78/773,468.15 = 318,789.18/x
  3. Step 3: Cross multiply
    560,471.78x = 773,468.15 × 318,789.18
  4. Step 4: Simplify right side
    560,471.78x = 246,573,277,294.62
  5. Step 5: Solve for x
    x = 246,573,277,294.62/560,471.78
  6. Step 6: Final answer
    x = 439,938.79

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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.