Home / 815,756.57-1,223,659.00-389,337.33

Finding the Fourth Proportional to 815,756.57, 1,223,659.00 and 389,337.33

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Solution

The fourth proportional to 815,756.57, 1,223,659.00 and 389,337.33 is: 584,017.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,756.57 : 1,223,659.00 = 389,337.33 : x
  2. Step 2: Convert to fraction form
    815,756.57/1,223,659.00 = 389,337.33/x
  3. Step 3: Cross multiply
    815,756.57x = 1,223,659.00 × 389,337.33
  4. Step 4: Simplify right side
    815,756.57x = 476,416,132,965.86
  5. Step 5: Solve for x
    x = 476,416,132,965.86/815,756.57
  6. Step 6: Final answer
    x = 584,017.53

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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.