Home / 639,109,213.80-958,663,820.70-230,112,220.20

Finding the Fourth Proportional to 639,109,213.80, 958,663,820.70 and 230,112,220.20

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Solution

The fourth proportional to 639,109,213.80, 958,663,820.70 and 230,112,220.20 is: 345,168,330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,109,213.80 : 958,663,820.70 = 230,112,220.20 : x
  2. Step 2: Convert to fraction form
    639,109,213.80/958,663,820.70 = 230,112,220.20/x
  3. Step 3: Cross multiply
    639,109,213.80x = 958,663,820.70 × 230,112,220.20
  4. Step 4: Simplify right side
    639,109,213.80x = 220,600,260,206,691,712
  5. Step 5: Solve for x
    x = 220,600,260,206,691,712/639,109,213.80
  6. Step 6: Final answer
    x = 345,168,330.30

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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.