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Finding the Fourth Proportional to 660,963.11, 991,442.63 and 187,648.79

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Solution

The fourth proportional to 660,963.11, 991,442.63 and 187,648.79 is: 281,472.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,963.11 : 991,442.63 = 187,648.79 : x
  2. Step 2: Convert to fraction form
    660,963.11/991,442.63 = 187,648.79/x
  3. Step 3: Cross multiply
    660,963.11x = 991,442.63 × 187,648.79
  4. Step 4: Simplify right side
    660,963.11x = 186,043,005,385.83
  5. Step 5: Solve for x
    x = 186,043,005,385.83/660,963.11
  6. Step 6: Final answer
    x = 281,472.60

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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.