Home / 639,239.04-958,858.56-218,518.56

Finding the Fourth Proportional to 639,239.04, 958,858.56 and 218,518.56

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Solution

The fourth proportional to 639,239.04, 958,858.56 and 218,518.56 is: 327,777.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,239.04 : 958,858.56 = 218,518.56 : x
  2. Step 2: Convert to fraction form
    639,239.04/958,858.56 = 218,518.56/x
  3. Step 3: Cross multiply
    639,239.04x = 958,858.56 × 218,518.56
  4. Step 4: Simplify right side
    639,239.04x = 209,528,391,774.87
  5. Step 5: Solve for x
    x = 209,528,391,774.87/639,239.04
  6. Step 6: Final answer
    x = 327,777.84

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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.