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Finding the Fourth Proportional to 677,521.67, 934,876.89 and 387,082.60

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Solution

The fourth proportional to 677,521.67, 934,876.89 and 387,082.60 is: 534,115.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,521.67 : 934,876.89 = 387,082.60 : x
  2. Step 2: Convert to fraction form
    677,521.67/934,876.89 = 387,082.60/x
  3. Step 3: Cross multiply
    677,521.67x = 934,876.89 × 387,082.60
  4. Step 4: Simplify right side
    677,521.67x = 361,874,574,923.92
  5. Step 5: Solve for x
    x = 361,874,574,923.92/677,521.67
  6. Step 6: Final answer
    x = 534,115.13

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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.