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Finding the Fourth Proportional to 547,685.30, 820,793.60 and 426,252.48

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Solution

The fourth proportional to 547,685.30, 820,793.60 and 426,252.48 is: 638,807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,685.30 : 820,793.60 = 426,252.48 : x
  2. Step 2: Convert to fraction form
    547,685.30/820,793.60 = 426,252.48/x
  3. Step 3: Cross multiply
    547,685.30x = 820,793.60 × 426,252.48
  4. Step 4: Simplify right side
    547,685.30x = 349,865,307,568.13
  5. Step 5: Solve for x
    x = 349,865,307,568.13/547,685.30
  6. Step 6: Final answer
    x = 638,807.19

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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.