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Finding the Fourth Proportional to 6,393,710.80, 9,578,124.60 and 3,861,845.20

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Solution

The fourth proportional to 6,393,710.80, 9,578,124.60 and 3,861,845.20 is: 5,785,252.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,393,710.80 : 9,578,124.60 = 3,861,845.20 : x
  2. Step 2: Convert to fraction form
    6,393,710.80/9,578,124.60 = 3,861,845.20/x
  3. Step 3: Cross multiply
    6,393,710.80x = 9,578,124.60 × 3,861,845.20
  4. Step 4: Simplify right side
    6,393,710.80x = 36,989,234,511,511.92
  5. Step 5: Solve for x
    x = 36,989,234,511,511.92/6,393,710.80
  6. Step 6: Final answer
    x = 5,785,252.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.