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Finding the Fourth Proportional to 617,062.40, 851,532.80 and 334,438.40

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Solution

The fourth proportional to 617,062.40, 851,532.80 and 334,438.40 is: 461,517.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,062.40 : 851,532.80 = 334,438.40 : x
  2. Step 2: Convert to fraction form
    617,062.40/851,532.80 = 334,438.40/x
  3. Step 3: Cross multiply
    617,062.40x = 851,532.80 × 334,438.40
  4. Step 4: Simplify right side
    617,062.40x = 284,785,267,179.52
  5. Step 5: Solve for x
    x = 284,785,267,179.52/617,062.40
  6. Step 6: Final answer
    x = 461,517.78

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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.