Home / 815,065.80-1,222,598.70-647,104.20

Finding the Fourth Proportional to 815,065.80, 1,222,598.70 and 647,104.20

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Solution

The fourth proportional to 815,065.80, 1,222,598.70 and 647,104.20 is: 970,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,065.80 : 1,222,598.70 = 647,104.20 : x
  2. Step 2: Convert to fraction form
    815,065.80/1,222,598.70 = 647,104.20/x
  3. Step 3: Cross multiply
    815,065.80x = 1,222,598.70 × 647,104.20
  4. Step 4: Simplify right side
    815,065.80x = 791,148,753,684.54
  5. Step 5: Solve for x
    x = 791,148,753,684.54/815,065.80
  6. Step 6: Final answer
    x = 970,656.30

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1.5x scale

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.