Home / 639,412.20-958,765.05-402,247.44

Finding the Fourth Proportional to 639,412.20, 958,765.05 and 402,247.44

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Solution

The fourth proportional to 639,412.20, 958,765.05 and 402,247.44 is: 603,148.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,412.20 : 958,765.05 = 402,247.44 : x
  2. Step 2: Convert to fraction form
    639,412.20/958,765.05 = 402,247.44/x
  3. Step 3: Cross multiply
    639,412.20x = 958,765.05 × 402,247.44
  4. Step 4: Simplify right side
    639,412.20x = 385,660,786,923.97
  5. Step 5: Solve for x
    x = 385,660,786,923.97/639,412.20
  6. Step 6: Final answer
    x = 603,148.93

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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.