Home / 639,819.36-960,319.56-324,497.76

Finding the Fourth Proportional to 639,819.36, 960,319.56 and 324,497.76

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Solution

The fourth proportional to 639,819.36, 960,319.56 and 324,497.76 is: 487,046.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,819.36 : 960,319.56 = 324,497.76 : x
  2. Step 2: Convert to fraction form
    639,819.36/960,319.56 = 324,497.76/x
  3. Step 3: Cross multiply
    639,819.36x = 960,319.56 × 324,497.76
  4. Step 4: Simplify right side
    639,819.36x = 311,621,546,104.19
  5. Step 5: Solve for x
    x = 311,621,546,104.19/639,819.36
  6. Step 6: Final answer
    x = 487,046.13

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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.