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Finding the Fourth Proportional to 708,269.52, 977,377.12 and 385,978.64

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Solution

The fourth proportional to 708,269.52, 977,377.12 and 385,978.64 is: 532,631.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,269.52 : 977,377.12 = 385,978.64 : x
  2. Step 2: Convert to fraction form
    708,269.52/977,377.12 = 385,978.64/x
  3. Step 3: Cross multiply
    708,269.52x = 977,377.12 × 385,978.64
  4. Step 4: Simplify right side
    708,269.52x = 377,246,691,544.72
  5. Step 5: Solve for x
    x = 377,246,691,544.72/708,269.52
  6. Step 6: Final answer
    x = 532,631.55

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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.