Home / 739,720.80-1,109,581.20-687,232.80

Finding the Fourth Proportional to 739,720.80, 1,109,581.20 and 687,232.80

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Solution

The fourth proportional to 739,720.80, 1,109,581.20 and 687,232.80 is: 1,030,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,720.80 : 1,109,581.20 = 687,232.80 : x
  2. Step 2: Convert to fraction form
    739,720.80/1,109,581.20 = 687,232.80/x
  3. Step 3: Cross multiply
    739,720.80x = 1,109,581.20 × 687,232.80
  4. Step 4: Simplify right side
    739,720.80x = 762,540,594,903.36
  5. Step 5: Solve for x
    x = 762,540,594,903.36/739,720.80
  6. Step 6: Final answer
    x = 1,030,849.20

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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.