Home / 657,236.80-985,855.20-257,890.60

Finding the Fourth Proportional to 657,236.80, 985,855.20 and 257,890.60

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Solution

The fourth proportional to 657,236.80, 985,855.20 and 257,890.60 is: 386,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,236.80 : 985,855.20 = 257,890.60 : x
  2. Step 2: Convert to fraction form
    657,236.80/985,855.20 = 257,890.60/x
  3. Step 3: Cross multiply
    657,236.80x = 985,855.20 × 257,890.60
  4. Step 4: Simplify right side
    657,236.80x = 254,242,789,041.12
  5. Step 5: Solve for x
    x = 254,242,789,041.12/657,236.80
  6. Step 6: Final answer
    x = 386,835.90

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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.