Home / 724,931.20-1,087,396.80-659,612.80

Finding the Fourth Proportional to 724,931.20, 1,087,396.80 and 659,612.80

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Solution

The fourth proportional to 724,931.20, 1,087,396.80 and 659,612.80 is: 989,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,931.20 : 1,087,396.80 = 659,612.80 : x
  2. Step 2: Convert to fraction form
    724,931.20/1,087,396.80 = 659,612.80/x
  3. Step 3: Cross multiply
    724,931.20x = 1,087,396.80 × 659,612.80
  4. Step 4: Simplify right side
    724,931.20x = 717,260,847,959.04
  5. Step 5: Solve for x
    x = 717,260,847,959.04/724,931.20
  6. Step 6: Final answer
    x = 989,419.20

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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.