Home / 429,407.27-647,126.84-386,766.23

Finding the Fourth Proportional to 429,407.27, 647,126.84 and 386,766.23

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Solution

The fourth proportional to 429,407.27, 647,126.84 and 386,766.23 is: 582,865.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,407.27 : 647,126.84 = 386,766.23 : x
  2. Step 2: Convert to fraction form
    429,407.27/647,126.84 = 386,766.23/x
  3. Step 3: Cross multiply
    429,407.27x = 647,126.84 × 386,766.23
  4. Step 4: Simplify right side
    429,407.27x = 250,286,807,922.60
  5. Step 5: Solve for x
    x = 250,286,807,922.60/429,407.27
  6. Step 6: Final answer
    x = 582,865.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.