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Finding the Fourth Proportional to 658,630.56, 908,531.16 and 396,804

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Solution

The fourth proportional to 658,630.56, 908,531.16 and 396,804 is: 547,361.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,630.56 : 908,531.16 = 396,804 : x
  2. Step 2: Convert to fraction form
    658,630.56/908,531.16 = 396,804/x
  3. Step 3: Cross multiply
    658,630.56x = 908,531.16 × 396,804
  4. Step 4: Simplify right side
    658,630.56x = 360,508,798,412.64
  5. Step 5: Solve for x
    x = 360,508,798,412.64/658,630.56
  6. Step 6: Final answer
    x = 547,361.18

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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.