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Finding the Fourth Proportional to 624,552, 861,998.52 and 356,280

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Solution

The fourth proportional to 624,552, 861,998.52 and 356,280 is: 491,733.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,552 : 861,998.52 = 356,280 : x
  2. Step 2: Convert to fraction form
    624,552/861,998.52 = 356,280/x
  3. Step 3: Cross multiply
    624,552x = 861,998.52 × 356,280
  4. Step 4: Simplify right side
    624,552x = 307,112,832,705.60
  5. Step 5: Solve for x
    x = 307,112,832,705.60/624,552
  6. Step 6: Final answer
    x = 491,733.01

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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.