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Finding the Fourth Proportional to 667,098.23, 920,578.51 and 372,750.30

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Solution

The fourth proportional to 667,098.23, 920,578.51 and 372,750.30 is: 514,385.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,098.23 : 920,578.51 = 372,750.30 : x
  2. Step 2: Convert to fraction form
    667,098.23/920,578.51 = 372,750.30/x
  3. Step 3: Cross multiply
    667,098.23x = 920,578.51 × 372,750.30
  4. Step 4: Simplify right side
    667,098.23x = 343,145,915,776.05
  5. Step 5: Solve for x
    x = 343,145,915,776.05/667,098.23
  6. Step 6: Final answer
    x = 514,385.89

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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.