Home / 813,414.60-1,220,121.90-655,950.60

Finding the Fourth Proportional to 813,414.60, 1,220,121.90 and 655,950.60

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Solution

The fourth proportional to 813,414.60, 1,220,121.90 and 655,950.60 is: 983,925.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,414.60 : 1,220,121.90 = 655,950.60 : x
  2. Step 2: Convert to fraction form
    813,414.60/1,220,121.90 = 655,950.60/x
  3. Step 3: Cross multiply
    813,414.60x = 1,220,121.90 × 655,950.60
  4. Step 4: Simplify right side
    813,414.60x = 800,339,692,378.14
  5. Step 5: Solve for x
    x = 800,339,692,378.14/813,414.60
  6. Step 6: Final answer
    x = 983,925.90

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1.5x scale

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.