Home / 657,000.20-985,500.30-213,768.20

Finding the Fourth Proportional to 657,000.20, 985,500.30 and 213,768.20

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Solution

The fourth proportional to 657,000.20, 985,500.30 and 213,768.20 is: 320,652.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,000.20 : 985,500.30 = 213,768.20 : x
  2. Step 2: Convert to fraction form
    657,000.20/985,500.30 = 213,768.20/x
  3. Step 3: Cross multiply
    657,000.20x = 985,500.30 × 213,768.20
  4. Step 4: Simplify right side
    657,000.20x = 210,668,625,230.46
  5. Step 5: Solve for x
    x = 210,668,625,230.46/657,000.20
  6. Step 6: Final answer
    x = 320,652.30

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Half scale
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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.