Home / 815,057.70-1,222,586.55-282,401.70

Finding the Fourth Proportional to 815,057.70, 1,222,586.55 and 282,401.70

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Solution

The fourth proportional to 815,057.70, 1,222,586.55 and 282,401.70 is: 423,602.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,057.70 : 1,222,586.55 = 282,401.70 : x
  2. Step 2: Convert to fraction form
    815,057.70/1,222,586.55 = 282,401.70/x
  3. Step 3: Cross multiply
    815,057.70x = 1,222,586.55 × 282,401.70
  4. Step 4: Simplify right side
    815,057.70x = 345,260,520,117.14
  5. Step 5: Solve for x
    x = 345,260,520,117.14/815,057.70
  6. Step 6: Final answer
    x = 423,602.55

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Double scale
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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.