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Finding the Fourth Proportional to 538,436.20, 807,654.30 and 463,640.80

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Solution

The fourth proportional to 538,436.20, 807,654.30 and 463,640.80 is: 695,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,436.20 : 807,654.30 = 463,640.80 : x
  2. Step 2: Convert to fraction form
    538,436.20/807,654.30 = 463,640.80/x
  3. Step 3: Cross multiply
    538,436.20x = 807,654.30 × 463,640.80
  4. Step 4: Simplify right side
    538,436.20x = 374,461,485,775.44
  5. Step 5: Solve for x
    x = 374,461,485,775.44/538,436.20
  6. Step 6: Final answer
    x = 695,461.20

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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.