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Finding the Fourth Proportional to 627,666, 940,968.30 and 272,412.96

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Solution

The fourth proportional to 627,666, 940,968.30 and 272,412.96 is: 408,389.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,666 : 940,968.30 = 272,412.96 : x
  2. Step 2: Convert to fraction form
    627,666/940,968.30 = 272,412.96/x
  3. Step 3: Cross multiply
    627,666x = 940,968.30 × 272,412.96
  4. Step 4: Simplify right side
    627,666x = 256,331,959,869.17
  5. Step 5: Solve for x
    x = 256,331,959,869.17/627,666
  6. Step 6: Final answer
    x = 408,389.11

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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.