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Finding the Fourth Proportional to 520,778.88, 781,168.32 and 494,184.96

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Solution

The fourth proportional to 520,778.88, 781,168.32 and 494,184.96 is: 741,277.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,778.88 : 781,168.32 = 494,184.96 : x
  2. Step 2: Convert to fraction form
    520,778.88/781,168.32 = 494,184.96/x
  3. Step 3: Cross multiply
    520,778.88x = 781,168.32 × 494,184.96
  4. Step 4: Simplify right side
    520,778.88x = 386,041,634,972.47
  5. Step 5: Solve for x
    x = 386,041,634,972.47/520,778.88
  6. Step 6: Final answer
    x = 741,277.44

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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.