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Finding the Fourth Proportional to 558,691.38, 771,011.60 and 316,984.14

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Solution

The fourth proportional to 558,691.38, 771,011.60 and 316,984.14 is: 437,448.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,691.38 : 771,011.60 = 316,984.14 : x
  2. Step 2: Convert to fraction form
    558,691.38/771,011.60 = 316,984.14/x
  3. Step 3: Cross multiply
    558,691.38x = 771,011.60 × 316,984.14
  4. Step 4: Simplify right side
    558,691.38x = 244,398,447,371.10
  5. Step 5: Solve for x
    x = 244,398,447,371.10/558,691.38
  6. Step 6: Final answer
    x = 437,448.04

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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.