Home / 665,192.20-997,788.30-455,240.20

Finding the Fourth Proportional to 665,192.20, 997,788.30 and 455,240.20

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Solution

The fourth proportional to 665,192.20, 997,788.30 and 455,240.20 is: 682,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,192.20 : 997,788.30 = 455,240.20 : x
  2. Step 2: Convert to fraction form
    665,192.20/997,788.30 = 455,240.20/x
  3. Step 3: Cross multiply
    665,192.20x = 997,788.30 × 455,240.20
  4. Step 4: Simplify right side
    665,192.20x = 454,233,345,249.66
  5. Step 5: Solve for x
    x = 454,233,345,249.66/665,192.20
  6. Step 6: Final answer
    x = 682,860.30

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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.