Home / 812,722.70-1,121,544.96-445,196.90

Finding the Fourth Proportional to 812,722.70, 1,121,544.96 and 445,196.90

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Solution

The fourth proportional to 812,722.70, 1,121,544.96 and 445,196.90 is: 614,364.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,722.70 : 1,121,544.96 = 445,196.90 : x
  2. Step 2: Convert to fraction form
    812,722.70/1,121,544.96 = 445,196.90/x
  3. Step 3: Cross multiply
    812,722.70x = 1,121,544.96 × 445,196.90
  4. Step 4: Simplify right side
    812,722.70x = 499,308,339,402.62
  5. Step 5: Solve for x
    x = 499,308,339,402.62/812,722.70
  6. Step 6: Final answer
    x = 614,364.95

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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.