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Finding the Fourth Proportional to 639,801.35, 960,292.52 and 324,479.69

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Solution

The fourth proportional to 639,801.35, 960,292.52 and 324,479.69 is: 487,019.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,801.35 : 960,292.52 = 324,479.69 : x
  2. Step 2: Convert to fraction form
    639,801.35/960,292.52 = 324,479.69/x
  3. Step 3: Cross multiply
    639,801.35x = 960,292.52 × 324,479.69
  4. Step 4: Simplify right side
    639,801.35x = 311,595,412,775.06
  5. Step 5: Solve for x
    x = 311,595,412,775.06/639,801.35
  6. Step 6: Final answer
    x = 487,019.00

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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.