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Finding the Fourth Proportional to 820,801.60, 1,231,029.60 and 347,502.40

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Solution

The fourth proportional to 820,801.60, 1,231,029.60 and 347,502.40 is: 521,180.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,801.60 : 1,231,029.60 = 347,502.40 : x
  2. Step 2: Convert to fraction form
    820,801.60/1,231,029.60 = 347,502.40/x
  3. Step 3: Cross multiply
    820,801.60x = 1,231,029.60 × 347,502.40
  4. Step 4: Simplify right side
    820,801.60x = 427,785,740,471.04
  5. Step 5: Solve for x
    x = 427,785,740,471.04/820,801.60
  6. Step 6: Final answer
    x = 521,180.44

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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.