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Finding the Fourth Proportional to 722,248.86, 996,702.53 and 399,958.57

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Solution

The fourth proportional to 722,248.86, 996,702.53 and 399,958.57 is: 551,942.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,248.86 : 996,702.53 = 399,958.57 : x
  2. Step 2: Convert to fraction form
    722,248.86/996,702.53 = 399,958.57/x
  3. Step 3: Cross multiply
    722,248.86x = 996,702.53 × 399,958.57
  4. Step 4: Simplify right side
    722,248.86x = 398,639,713,563.19
  5. Step 5: Solve for x
    x = 398,639,713,563.19/722,248.86
  6. Step 6: Final answer
    x = 551,942.32

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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.