Home / 815,321.91-1,222,937.88-335,428.26

Finding the Fourth Proportional to 815,321.91, 1,222,937.88 and 335,428.26

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Solution

The fourth proportional to 815,321.91, 1,222,937.88 and 335,428.26 is: 503,123.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,321.91 : 1,222,937.88 = 335,428.26 : x
  2. Step 2: Convert to fraction form
    815,321.91/1,222,937.88 = 335,428.26/x
  3. Step 3: Cross multiply
    815,321.91x = 1,222,937.88 × 335,428.26
  4. Step 4: Simplify right side
    815,321.91x = 410,207,927,469.50
  5. Step 5: Solve for x
    x = 410,207,927,469.50/815,321.91
  6. Step 6: Final answer
    x = 503,123.89

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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.