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Finding the Fourth Proportional to 558,707.64, 771,034.02 and 317,000.40

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Solution

The fourth proportional to 558,707.64, 771,034.02 and 317,000.40 is: 437,470.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,707.64 : 771,034.02 = 317,000.40 : x
  2. Step 2: Convert to fraction form
    558,707.64/771,034.02 = 317,000.40/x
  3. Step 3: Cross multiply
    558,707.64x = 771,034.02 × 317,000.40
  4. Step 4: Simplify right side
    558,707.64x = 244,418,092,753.61
  5. Step 5: Solve for x
    x = 244,418,092,753.61/558,707.64
  6. Step 6: Final answer
    x = 437,470.47

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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.