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Finding the Fourth Proportional to 660,644, 991,015.44 and 187,367.48

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Solution

The fourth proportional to 660,644, 991,015.44 and 187,367.48 is: 281,065.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,644 : 991,015.44 = 187,367.48 : x
  2. Step 2: Convert to fraction form
    660,644/991,015.44 = 187,367.48/x
  3. Step 3: Cross multiply
    660,644x = 991,015.44 × 187,367.48
  4. Step 4: Simplify right side
    660,644x = 185,684,065,633.89
  5. Step 5: Solve for x
    x = 185,684,065,633.89/660,644
  6. Step 6: Final answer
    x = 281,065.24

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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.