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Finding the Fourth Proportional to 722,230.92, 996,666.30 and 399,934.08

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Solution

The fourth proportional to 722,230.92, 996,666.30 and 399,934.08 is: 551,902.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,230.92 : 996,666.30 = 399,934.08 : x
  2. Step 2: Convert to fraction form
    722,230.92/996,666.30 = 399,934.08/x
  3. Step 3: Cross multiply
    722,230.92x = 996,666.30 × 399,934.08
  4. Step 4: Simplify right side
    722,230.92x = 398,600,819,757.50
  5. Step 5: Solve for x
    x = 398,600,819,757.50/722,230.92
  6. Step 6: Final answer
    x = 551,902.18

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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.