Home / 657,079.80-985,619.70-257,733.60

Finding the Fourth Proportional to 657,079.80, 985,619.70 and 257,733.60

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Solution

The fourth proportional to 657,079.80, 985,619.70 and 257,733.60 is: 386,600.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,079.80 : 985,619.70 = 257,733.60 : x
  2. Step 2: Convert to fraction form
    657,079.80/985,619.70 = 257,733.60/x
  3. Step 3: Cross multiply
    657,079.80x = 985,619.70 × 257,733.60
  4. Step 4: Simplify right side
    657,079.80x = 254,027,313,511.92
  5. Step 5: Solve for x
    x = 254,027,313,511.92/657,079.80
  6. Step 6: Final answer
    x = 386,600.40

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Double scale
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Similar ratio
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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.