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Finding the Fourth Proportional to 660,638, 991,006.44 and 187,361.48

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Solution

The fourth proportional to 660,638, 991,006.44 and 187,361.48 is: 281,056.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,638 : 991,006.44 = 187,361.48 : x
  2. Step 2: Convert to fraction form
    660,638/991,006.44 = 187,361.48/x
  3. Step 3: Cross multiply
    660,638x = 991,006.44 × 187,361.48
  4. Step 4: Simplify right side
    660,638x = 185,676,433,287.93
  5. Step 5: Solve for x
    x = 185,676,433,287.93/660,638
  6. Step 6: Final answer
    x = 281,056.24

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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.