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Finding the Fourth Proportional to 659,411.31, 989,087.22 and 275,001.85

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Solution

The fourth proportional to 659,411.31, 989,087.22 and 275,001.85 is: 412,490.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,411.31 : 989,087.22 = 275,001.85 : x
  2. Step 2: Convert to fraction form
    659,411.31/989,087.22 = 275,001.85/x
  3. Step 3: Cross multiply
    659,411.31x = 989,087.22 × 275,001.85
  4. Step 4: Simplify right side
    659,411.31x = 272,000,808,990.91
  5. Step 5: Solve for x
    x = 272,000,808,990.91/659,411.31
  6. Step 6: Final answer
    x = 412,490.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.