Home / 812,122.68-1,120,715.70-449,538.74

Finding the Fourth Proportional to 812,122.68, 1,120,715.70 and 449,538.74

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Solution

The fourth proportional to 812,122.68, 1,120,715.70 and 449,538.74 is: 620,355.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,122.68 : 1,120,715.70 = 449,538.74 : x
  2. Step 2: Convert to fraction form
    812,122.68/1,120,715.70 = 449,538.74/x
  3. Step 3: Cross multiply
    812,122.68x = 1,120,715.70 × 449,538.74
  4. Step 4: Simplify right side
    812,122.68x = 503,805,123,676.22
  5. Step 5: Solve for x
    x = 503,805,123,676.22/812,122.68
  6. Step 6: Final answer
    x = 620,355.93

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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.