Home / 731,619.20-1,099,761.60-689,628.80

Finding the Fourth Proportional to 731,619.20, 1,099,761.60 and 689,628.80

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Solution

The fourth proportional to 731,619.20, 1,099,761.60 and 689,628.80 is: 1,036,642.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,619.20 : 1,099,761.60 = 689,628.80 : x
  2. Step 2: Convert to fraction form
    731,619.20/1,099,761.60 = 689,628.80/x
  3. Step 3: Cross multiply
    731,619.20x = 1,099,761.60 × 689,628.80
  4. Step 4: Simplify right side
    731,619.20x = 758,427,272,494.08
  5. Step 5: Solve for x
    x = 758,427,272,494.08/731,619.20
  6. Step 6: Final answer
    x = 1,036,642.11

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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.