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Finding the Fourth Proportional to 624,627, 861,985.26 and 356,349.24

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Solution

The fourth proportional to 624,627, 861,985.26 and 356,349.24 is: 491,761.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,627 : 861,985.26 = 356,349.24 : x
  2. Step 2: Convert to fraction form
    624,627/861,985.26 = 356,349.24/x
  3. Step 3: Cross multiply
    624,627x = 861,985.26 × 356,349.24
  4. Step 4: Simplify right side
    624,627x = 307,167,792,292.20
  5. Step 5: Solve for x
    x = 307,167,792,292.20/624,627
  6. Step 6: Final answer
    x = 491,761.95

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1.5x scale

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.