Home / 748,990.49-1,123,768.78-449,679.71

Finding the Fourth Proportional to 748,990.49, 1,123,768.78 and 449,679.71

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Solution

The fourth proportional to 748,990.49, 1,123,768.78 and 449,679.71 is: 674,689.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,990.49 : 1,123,768.78 = 449,679.71 : x
  2. Step 2: Convert to fraction form
    748,990.49/1,123,768.78 = 449,679.71/x
  3. Step 3: Cross multiply
    748,990.49x = 1,123,768.78 × 449,679.71
  4. Step 4: Simplify right side
    748,990.49x = 505,336,020,782.68
  5. Step 5: Solve for x
    x = 505,336,020,782.68/748,990.49
  6. Step 6: Final answer
    x = 674,689.51

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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.