Home / 815,426.55-1,223,139.83-342,451.35

Finding the Fourth Proportional to 815,426.55, 1,223,139.83 and 342,451.35

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Solution

The fourth proportional to 815,426.55, 1,223,139.83 and 342,451.35 is: 513,677.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,426.55 : 1,223,139.83 = 342,451.35 : x
  2. Step 2: Convert to fraction form
    815,426.55/1,223,139.83 = 342,451.35/x
  3. Step 3: Cross multiply
    815,426.55x = 1,223,139.83 × 342,451.35
  4. Step 4: Simplify right side
    815,426.55x = 418,865,884,310.01
  5. Step 5: Solve for x
    x = 418,865,884,310.01/815,426.55
  6. Step 6: Final answer
    x = 513,677.03

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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.