Home / 639,118.04-958,677.06-218,397.56

Finding the Fourth Proportional to 639,118.04, 958,677.06 and 218,397.56

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Solution

The fourth proportional to 639,118.04, 958,677.06 and 218,397.56 is: 327,596.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,118.04 : 958,677.06 = 218,397.56 : x
  2. Step 2: Convert to fraction form
    639,118.04/958,677.06 = 218,397.56/x
  3. Step 3: Cross multiply
    639,118.04x = 958,677.06 × 218,397.56
  4. Step 4: Simplify right side
    639,118.04x = 209,372,730,731.97
  5. Step 5: Solve for x
    x = 209,372,730,731.97/639,118.04
  6. Step 6: Final answer
    x = 327,596.34

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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.