Home / 639,496.79-958,412.22-259,974.21

Finding the Fourth Proportional to 639,496.79, 958,412.22 and 259,974.21

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Solution

The fourth proportional to 639,496.79, 958,412.22 and 259,974.21 is: 389,622.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,496.79 : 958,412.22 = 259,974.21 : x
  2. Step 2: Convert to fraction form
    639,496.79/958,412.22 = 259,974.21/x
  3. Step 3: Cross multiply
    639,496.79x = 958,412.22 × 259,974.21
  4. Step 4: Simplify right side
    639,496.79x = 249,162,459,748.85
  5. Step 5: Solve for x
    x = 249,162,459,748.85/639,496.79
  6. Step 6: Final answer
    x = 389,622.69

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Double scale
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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.