Home / 639,065.10-881,909.91-352,585.86

Finding the Fourth Proportional to 639,065.10, 881,909.91 and 352,585.86

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Solution

The fourth proportional to 639,065.10, 881,909.91 and 352,585.86 is: 486,568.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,065.10 : 881,909.91 = 352,585.86 : x
  2. Step 2: Convert to fraction form
    639,065.10/881,909.91 = 352,585.86/x
  3. Step 3: Cross multiply
    639,065.10x = 881,909.91 × 352,585.86
  4. Step 4: Simplify right side
    639,065.10x = 310,948,964,059.87
  5. Step 5: Solve for x
    x = 310,948,964,059.87/639,065.10
  6. Step 6: Final answer
    x = 486,568.53

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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.