Home / 748,854.80-1,123,282.20-660,281.30

Finding the Fourth Proportional to 748,854.80, 1,123,282.20 and 660,281.30

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Solution

The fourth proportional to 748,854.80, 1,123,282.20 and 660,281.30 is: 990,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,854.80 : 1,123,282.20 = 660,281.30 : x
  2. Step 2: Convert to fraction form
    748,854.80/1,123,282.20 = 660,281.30/x
  3. Step 3: Cross multiply
    748,854.80x = 1,123,282.20 × 660,281.30
  4. Step 4: Simplify right side
    748,854.80x = 741,682,231,282.86
  5. Step 5: Solve for x
    x = 741,682,231,282.86/748,854.80
  6. Step 6: Final answer
    x = 990,421.95

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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.