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Finding the Fourth Proportional to 658,630.18, 908,859.43 and 400,471.27

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Solution

The fourth proportional to 658,630.18, 908,859.43 and 400,471.27 is: 552,619.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,630.18 : 908,859.43 = 400,471.27 : x
  2. Step 2: Convert to fraction form
    658,630.18/908,859.43 = 400,471.27/x
  3. Step 3: Cross multiply
    658,630.18x = 908,859.43 × 400,471.27
  4. Step 4: Simplify right side
    658,630.18x = 363,972,090,183.58
  5. Step 5: Solve for x
    x = 363,972,090,183.58/658,630.18
  6. Step 6: Final answer
    x = 552,619.82

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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.