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Finding the Fourth Proportional to 454,261.70, 681,392.55 and 424,737.20

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Solution

The fourth proportional to 454,261.70, 681,392.55 and 424,737.20 is: 637,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,261.70 : 681,392.55 = 424,737.20 : x
  2. Step 2: Convert to fraction form
    454,261.70/681,392.55 = 424,737.20/x
  3. Step 3: Cross multiply
    454,261.70x = 681,392.55 × 424,737.20
  4. Step 4: Simplify right side
    454,261.70x = 289,412,763,787.86
  5. Step 5: Solve for x
    x = 289,412,763,787.86/454,261.70
  6. Step 6: Final answer
    x = 637,105.80

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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.