Home / 815,516.56-1,223,214.36-342,182.80

Finding the Fourth Proportional to 815,516.56, 1,223,214.36 and 342,182.80

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Solution

The fourth proportional to 815,516.56, 1,223,214.36 and 342,182.80 is: 513,248.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,516.56 : 1,223,214.36 = 342,182.80 : x
  2. Step 2: Convert to fraction form
    815,516.56/1,223,214.36 = 342,182.80/x
  3. Step 3: Cross multiply
    815,516.56x = 1,223,214.36 × 342,182.80
  4. Step 4: Simplify right side
    815,516.56x = 418,562,914,705.01
  5. Step 5: Solve for x
    x = 418,562,914,705.01/815,516.56
  6. Step 6: Final answer
    x = 513,248.82

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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.