Home / 680,920.40-1,021,380.60-442,974.80

Finding the Fourth Proportional to 680,920.40, 1,021,380.60 and 442,974.80

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Solution

The fourth proportional to 680,920.40, 1,021,380.60 and 442,974.80 is: 664,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,920.40 : 1,021,380.60 = 442,974.80 : x
  2. Step 2: Convert to fraction form
    680,920.40/1,021,380.60 = 442,974.80/x
  3. Step 3: Cross multiply
    680,920.40x = 1,021,380.60 × 442,974.80
  4. Step 4: Simplify right side
    680,920.40x = 452,445,867,008.88
  5. Step 5: Solve for x
    x = 452,445,867,008.88/680,920.40
  6. Step 6: Final answer
    x = 664,462.20

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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.