Home / 724,348.40-1,086,686.62-387,211.41

Finding the Fourth Proportional to 724,348.40, 1,086,686.62 and 387,211.41

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Solution

The fourth proportional to 724,348.40, 1,086,686.62 and 387,211.41 is: 580,904.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,348.40 : 1,086,686.62 = 387,211.41 : x
  2. Step 2: Convert to fraction form
    724,348.40/1,086,686.62 = 387,211.41/x
  3. Step 3: Cross multiply
    724,348.40x = 1,086,686.62 × 387,211.41
  4. Step 4: Simplify right side
    724,348.40x = 420,777,458,358.33
  5. Step 5: Solve for x
    x = 420,777,458,358.33/724,348.40
  6. Step 6: Final answer
    x = 580,904.79

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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.