Home / 813,728.70-1,123,012.17-451,266.30

Finding the Fourth Proportional to 813,728.70, 1,123,012.17 and 451,266.30

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Solution

The fourth proportional to 813,728.70, 1,123,012.17 and 451,266.30 is: 622,784.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,728.70 : 1,123,012.17 = 451,266.30 : x
  2. Step 2: Convert to fraction form
    813,728.70/1,123,012.17 = 451,266.30/x
  3. Step 3: Cross multiply
    813,728.70x = 1,123,012.17 × 451,266.30
  4. Step 4: Simplify right side
    813,728.70x = 506,777,546,810.87
  5. Step 5: Solve for x
    x = 506,777,546,810.87/813,728.70
  6. Step 6: Final answer
    x = 622,784.41

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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.