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Finding the Fourth Proportional to 722,463.76, 996,956.04 and 400,154.68

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Solution

The fourth proportional to 722,463.76, 996,956.04 and 400,154.68 is: 552,189.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,463.76 : 996,956.04 = 400,154.68 : x
  2. Step 2: Convert to fraction form
    722,463.76/996,956.04 = 400,154.68/x
  3. Step 3: Cross multiply
    722,463.76x = 996,956.04 × 400,154.68
  4. Step 4: Simplify right side
    722,463.76x = 398,936,625,160.27
  5. Step 5: Solve for x
    x = 398,936,625,160.27/722,463.76
  6. Step 6: Final answer
    x = 552,189.12

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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.