Home / 813,427.80-1,220,832.90-655,834.20

Finding the Fourth Proportional to 813,427.80, 1,220,832.90 and 655,834.20

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Solution

The fourth proportional to 813,427.80, 1,220,832.90 and 655,834.20 is: 984,308.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,427.80 : 1,220,832.90 = 655,834.20 : x
  2. Step 2: Convert to fraction form
    813,427.80/1,220,832.90 = 655,834.20/x
  3. Step 3: Cross multiply
    813,427.80x = 1,220,832.90 × 655,834.20
  4. Step 4: Simplify right side
    813,427.80x = 800,663,968,305.18
  5. Step 5: Solve for x
    x = 800,663,968,305.18/813,427.80
  6. Step 6: Final answer
    x = 984,308.59

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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.