Home / 639,115.11-881,997.29-352,653.65

Finding the Fourth Proportional to 639,115.11, 881,997.29 and 352,653.65

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Solution

The fourth proportional to 639,115.11, 881,997.29 and 352,653.65 is: 486,672.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,115.11 : 881,997.29 = 352,653.65 : x
  2. Step 2: Convert to fraction form
    639,115.11/881,997.29 = 352,653.65/x
  3. Step 3: Cross multiply
    639,115.11x = 881,997.29 × 352,653.65
  4. Step 4: Simplify right side
    639,115.11x = 311,039,560,080.26
  5. Step 5: Solve for x
    x = 311,039,560,080.26/639,115.11
  6. Step 6: Final answer
    x = 486,672.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.