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Finding the Fourth Proportional to 660,081.30, 989,963.41 and 304,753.92

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Solution

The fourth proportional to 660,081.30, 989,963.41 and 304,753.92 is: 457,057.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,081.30 : 989,963.41 = 304,753.92 : x
  2. Step 2: Convert to fraction form
    660,081.30/989,963.41 = 304,753.92/x
  3. Step 3: Cross multiply
    660,081.30x = 989,963.41 × 304,753.92
  4. Step 4: Simplify right side
    660,081.30x = 301,695,229,854.07
  5. Step 5: Solve for x
    x = 301,695,229,854.07/660,081.30
  6. Step 6: Final answer
    x = 457,057.68

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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.