Home / 724,317.60-1,086,476.40-191,920.80

Finding the Fourth Proportional to 724,317.60, 1,086,476.40 and 191,920.80

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Solution

The fourth proportional to 724,317.60, 1,086,476.40 and 191,920.80 is: 287,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,317.60 : 1,086,476.40 = 191,920.80 : x
  2. Step 2: Convert to fraction form
    724,317.60/1,086,476.40 = 191,920.80/x
  3. Step 3: Cross multiply
    724,317.60x = 1,086,476.40 × 191,920.80
  4. Step 4: Simplify right side
    724,317.60x = 208,517,419,869.12
  5. Step 5: Solve for x
    x = 208,517,419,869.12/724,317.60
  6. Step 6: Final answer
    x = 287,881.20

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Similar ratio
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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.