Home / 721,655.14-995,868.39-394,966.57

Finding the Fourth Proportional to 721,655.14, 995,868.39 and 394,966.57

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Solution

The fourth proportional to 721,655.14, 995,868.39 and 394,966.57 is: 545,045.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,655.14 : 995,868.39 = 394,966.57 : x
  2. Step 2: Convert to fraction form
    721,655.14/995,868.39 = 394,966.57/x
  3. Step 3: Cross multiply
    721,655.14x = 995,868.39 × 394,966.57
  4. Step 4: Simplify right side
    721,655.14x = 393,334,722,169.72
  5. Step 5: Solve for x
    x = 393,334,722,169.72/721,655.14
  6. Step 6: Final answer
    x = 545,045.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.