Home / 813,942.33-1,123,147.56-451,274.55

Finding the Fourth Proportional to 813,942.33, 1,123,147.56 and 451,274.55

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Solution

The fourth proportional to 813,942.33, 1,123,147.56 and 451,274.55 is: 622,707.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,942.33 : 1,123,147.56 = 451,274.55 : x
  2. Step 2: Convert to fraction form
    813,942.33/1,123,147.56 = 451,274.55/x
  3. Step 3: Cross multiply
    813,942.33x = 1,123,147.56 × 451,274.55
  4. Step 4: Simplify right side
    813,942.33x = 506,847,909,722.60
  5. Step 5: Solve for x
    x = 506,847,909,722.60/813,942.33
  6. Step 6: Final answer
    x = 622,707.40

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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.