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Finding the Fourth Proportional to 708,517.62, 977,751.54 and 386,226.72

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Solution

The fourth proportional to 708,517.62, 977,751.54 and 386,226.72 is: 532,991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,517.62 : 977,751.54 = 386,226.72 : x
  2. Step 2: Convert to fraction form
    708,517.62/977,751.54 = 386,226.72/x
  3. Step 3: Cross multiply
    708,517.62x = 977,751.54 × 386,226.72
  4. Step 4: Simplify right side
    708,517.62x = 377,633,770,269.15
  5. Step 5: Solve for x
    x = 377,633,770,269.15/708,517.62
  6. Step 6: Final answer
    x = 532,991.36

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Double scale
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1.5x scale

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.