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Finding the Fourth Proportional to 713,456.85, 984,559.23 and 391,169.73

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Solution

The fourth proportional to 713,456.85, 984,559.23 and 391,169.73 is: 539,808.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,456.85 : 984,559.23 = 391,169.73 : x
  2. Step 2: Convert to fraction form
    713,456.85/984,559.23 = 391,169.73/x
  3. Step 3: Cross multiply
    713,456.85x = 984,559.23 × 391,169.73
  4. Step 4: Simplify right side
    713,456.85x = 385,129,768,168.11
  5. Step 5: Solve for x
    x = 385,129,768,168.11/713,456.85
  6. Step 6: Final answer
    x = 539,808.07

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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.