Home / 644,190.30-966,285.45-378,251.10

Finding the Fourth Proportional to 644,190.30, 966,285.45 and 378,251.10

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Solution

The fourth proportional to 644,190.30, 966,285.45 and 378,251.10 is: 567,376.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,190.30 : 966,285.45 = 378,251.10 : x
  2. Step 2: Convert to fraction form
    644,190.30/966,285.45 = 378,251.10/x
  3. Step 3: Cross multiply
    644,190.30x = 966,285.45 × 378,251.10
  4. Step 4: Simplify right side
    644,190.30x = 365,498,534,376.50
  5. Step 5: Solve for x
    x = 365,498,534,376.50/644,190.30
  6. Step 6: Final answer
    x = 567,376.65

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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.