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Finding the Fourth Proportional to 709,787.30, 1,064,972.55 and 260,723.30

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Solution

The fourth proportional to 709,787.30, 1,064,972.55 and 260,723.30 is: 391,192.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,787.30 : 1,064,972.55 = 260,723.30 : x
  2. Step 2: Convert to fraction form
    709,787.30/1,064,972.55 = 260,723.30/x
  3. Step 3: Cross multiply
    709,787.30x = 1,064,972.55 × 260,723.30
  4. Step 4: Simplify right side
    709,787.30x = 277,663,157,645.42
  5. Step 5: Solve for x
    x = 277,663,157,645.42/709,787.30
  6. Step 6: Final answer
    x = 391,192.06

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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.