Home / 815,916.60-1,223,874.90-810,011.70

Finding the Fourth Proportional to 815,916.60, 1,223,874.90 and 810,011.70

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Solution

The fourth proportional to 815,916.60, 1,223,874.90 and 810,011.70 is: 1,215,017.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,916.60 : 1,223,874.90 = 810,011.70 : x
  2. Step 2: Convert to fraction form
    815,916.60/1,223,874.90 = 810,011.70/x
  3. Step 3: Cross multiply
    815,916.60x = 1,223,874.90 × 810,011.70
  4. Step 4: Simplify right side
    815,916.60x = 991,352,988,336.33
  5. Step 5: Solve for x
    x = 991,352,988,336.33/815,916.60
  6. Step 6: Final answer
    x = 1,215,017.55

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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.