Home / 812,861.28-1,121,748.38-445,351.48

Finding the Fourth Proportional to 812,861.28, 1,121,748.38 and 445,351.48

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Solution

The fourth proportional to 812,861.28, 1,121,748.38 and 445,351.48 is: 614,584.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,861.28 : 1,121,748.38 = 445,351.48 : x
  2. Step 2: Convert to fraction form
    812,861.28/1,121,748.38 = 445,351.48/x
  3. Step 3: Cross multiply
    812,861.28x = 1,121,748.38 × 445,351.48
  4. Step 4: Simplify right side
    812,861.28x = 499,572,301,220.60
  5. Step 5: Solve for x
    x = 499,572,301,220.60/812,861.28
  6. Step 6: Final answer
    x = 614,584.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.