Home / 579,884.31-800,240.09-338,120.19

Finding the Fourth Proportional to 579,884.31, 800,240.09 and 338,120.19

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Solution

The fourth proportional to 579,884.31, 800,240.09 and 338,120.19 is: 466,605.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,884.31 : 800,240.09 = 338,120.19 : x
  2. Step 2: Convert to fraction form
    579,884.31/800,240.09 = 338,120.19/x
  3. Step 3: Cross multiply
    579,884.31x = 800,240.09 × 338,120.19
  4. Step 4: Simplify right side
    579,884.31x = 270,577,331,276.42
  5. Step 5: Solve for x
    x = 270,577,331,276.42/579,884.31
  6. Step 6: Final answer
    x = 466,605.71

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Half scale
Find fourth proportional to 1,159,768.62, 1,600,480.18 and 676,240.38
Double scale
Find fourth proportional to 579,885.31, 800,241.47 and 338,121.19
Similar ratio
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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.