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Finding the Fourth Proportional to 658,630.68, 908,860.12 and 400,471.77

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Solution

The fourth proportional to 658,630.68, 908,860.12 and 400,471.77 is: 552,620.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,630.68 : 908,860.12 = 400,471.77 : x
  2. Step 2: Convert to fraction form
    658,630.68/908,860.12 = 400,471.77/x
  3. Step 3: Cross multiply
    658,630.68x = 908,860.12 × 400,471.77
  4. Step 4: Simplify right side
    658,630.68x = 363,972,820,938.81
  5. Step 5: Solve for x
    x = 363,972,820,938.81/658,630.68
  6. Step 6: Final answer
    x = 552,620.51

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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.