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Finding the Fourth Proportional to 720,506.94, 994,306.96 and 393,829.29

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Solution

The fourth proportional to 720,506.94, 994,306.96 and 393,829.29 is: 543,488.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,506.94 : 994,306.96 = 393,829.29 : x
  2. Step 2: Convert to fraction form
    720,506.94/994,306.96 = 393,829.29/x
  3. Step 3: Cross multiply
    720,506.94x = 994,306.96 × 393,829.29
  4. Step 4: Simplify right side
    720,506.94x = 391,587,204,098.86
  5. Step 5: Solve for x
    x = 391,587,204,098.86/720,506.94
  6. Step 6: Final answer
    x = 543,488.46

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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.