Home / 639,083,387.40-958,625,081.10-329,146,996.20

Finding the Fourth Proportional to 639,083,387.40, 958,625,081.10 and 329,146,996.20

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Solution

The fourth proportional to 639,083,387.40, 958,625,081.10 and 329,146,996.20 is: 493,720,494.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,083,387.40 : 958,625,081.10 = 329,146,996.20 : x
  2. Step 2: Convert to fraction form
    639,083,387.40/958,625,081.10 = 329,146,996.20/x
  3. Step 3: Cross multiply
    639,083,387.40x = 958,625,081.10 × 329,146,996.20
  4. Step 4: Simplify right side
    639,083,387.40x = 315,528,565,926,046,400
  5. Step 5: Solve for x
    x = 315,528,565,926,046,400/639,083,387.40
  6. Step 6: Final answer
    x = 493,720,494.30

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Half scale
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Double scale
Find fourth proportional to 639,083,388.40, 958,625,082.60 and 329,146,997.20
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.