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Finding the Fourth Proportional to 558,691.48, 771,156.70 and 365,128.31

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Solution

The fourth proportional to 558,691.48, 771,156.70 and 365,128.31 is: 503,983.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,691.48 : 771,156.70 = 365,128.31 : x
  2. Step 2: Convert to fraction form
    558,691.48/771,156.70 = 365,128.31/x
  3. Step 3: Cross multiply
    558,691.48x = 771,156.70 × 365,128.31
  4. Step 4: Simplify right side
    558,691.48x = 281,571,141,347.34
  5. Step 5: Solve for x
    x = 281,571,141,347.34/558,691.48
  6. Step 6: Final answer
    x = 503,983.24

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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.