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Finding the Fourth Proportional to 886,991.90, 1,330,487.85 and 437,927.90

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Solution

The fourth proportional to 886,991.90, 1,330,487.85 and 437,927.90 is: 656,891.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,991.90 : 1,330,487.85 = 437,927.90 : x
  2. Step 2: Convert to fraction form
    886,991.90/1,330,487.85 = 437,927.90/x
  3. Step 3: Cross multiply
    886,991.90x = 1,330,487.85 × 437,927.90
  4. Step 4: Simplify right side
    886,991.90x = 582,657,750,126.02
  5. Step 5: Solve for x
    x = 582,657,750,126.02/886,991.90
  6. Step 6: Final answer
    x = 656,891.85

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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.