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Finding the Fourth Proportional to 415,264.60, 622,896.90 and 387,616.60

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Solution

The fourth proportional to 415,264.60, 622,896.90 and 387,616.60 is: 581,424.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,264.60 : 622,896.90 = 387,616.60 : x
  2. Step 2: Convert to fraction form
    415,264.60/622,896.90 = 387,616.60/x
  3. Step 3: Cross multiply
    415,264.60x = 622,896.90 × 387,616.60
  4. Step 4: Simplify right side
    415,264.60x = 241,445,178,528.54
  5. Step 5: Solve for x
    x = 241,445,178,528.54/415,264.60
  6. Step 6: Final answer
    x = 581,424.90

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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.