Home / 639,221.87-957,919.12-469,410.23

Finding the Fourth Proportional to 639,221.87, 957,919.12 and 469,410.23

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Solution

The fourth proportional to 639,221.87, 957,919.12 and 469,410.23 is: 703,444.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,221.87 : 957,919.12 = 469,410.23 : x
  2. Step 2: Convert to fraction form
    639,221.87/957,919.12 = 469,410.23/x
  3. Step 3: Cross multiply
    639,221.87x = 957,919.12 × 469,410.23
  4. Step 4: Simplify right side
    639,221.87x = 449,657,034,440.60
  5. Step 5: Solve for x
    x = 449,657,034,440.60/639,221.87
  6. Step 6: Final answer
    x = 703,444.38

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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.