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Finding the Fourth Proportional to 558,691.01, 771,011.10 and 316,983.77

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Solution

The fourth proportional to 558,691.01, 771,011.10 and 316,983.77 is: 437,447.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,691.01 : 771,011.10 = 316,983.77 : x
  2. Step 2: Convert to fraction form
    558,691.01/771,011.10 = 316,983.77/x
  3. Step 3: Cross multiply
    558,691.01x = 771,011.10 × 316,983.77
  4. Step 4: Simplify right side
    558,691.01x = 244,398,005,189.85
  5. Step 5: Solve for x
    x = 244,398,005,189.85/558,691.01
  6. Step 6: Final answer
    x = 437,447.54

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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.