Home / 724,138.40-1,086,596.40-303,456.80

Finding the Fourth Proportional to 724,138.40, 1,086,596.40 and 303,456.80

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Solution

The fourth proportional to 724,138.40, 1,086,596.40 and 303,456.80 is: 455,348.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,138.40 : 1,086,596.40 = 303,456.80 : x
  2. Step 2: Convert to fraction form
    724,138.40/1,086,596.40 = 303,456.80/x
  3. Step 3: Cross multiply
    724,138.40x = 1,086,596.40 × 303,456.80
  4. Step 4: Simplify right side
    724,138.40x = 329,735,066,435.52
  5. Step 5: Solve for x
    x = 329,735,066,435.52/724,138.40
  6. Step 6: Final answer
    x = 455,348.13

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Double scale
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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.