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Finding the Fourth Proportional to 492,463.52, 679,558.84 and 277,656.40

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Solution

The fourth proportional to 492,463.52, 679,558.84 and 277,656.40 is: 383,142.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,463.52 : 679,558.84 = 277,656.40 : x
  2. Step 2: Convert to fraction form
    492,463.52/679,558.84 = 277,656.40/x
  3. Step 3: Cross multiply
    492,463.52x = 679,558.84 × 277,656.40
  4. Step 4: Simplify right side
    492,463.52x = 188,683,861,102.58
  5. Step 5: Solve for x
    x = 188,683,861,102.58/492,463.52
  6. Step 6: Final answer
    x = 383,142.82

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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.