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Finding the Fourth Proportional to 658,003.68, 908,062.56 and 399,792.96

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Solution

The fourth proportional to 658,003.68, 908,062.56 and 399,792.96 is: 551,724.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,003.68 : 908,062.56 = 399,792.96 : x
  2. Step 2: Convert to fraction form
    658,003.68/908,062.56 = 399,792.96/x
  3. Step 3: Cross multiply
    658,003.68x = 908,062.56 × 399,792.96
  4. Step 4: Simplify right side
    658,003.68x = 363,037,018,727.58
  5. Step 5: Solve for x
    x = 363,037,018,727.58/658,003.68
  6. Step 6: Final answer
    x = 551,724.91

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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.