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Finding the Fourth Proportional to 640,433.34, 960,615.36 and 324,882.06

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Solution

The fourth proportional to 640,433.34, 960,615.36 and 324,882.06 is: 487,305.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,433.34 : 960,615.36 = 324,882.06 : x
  2. Step 2: Convert to fraction form
    640,433.34/960,615.36 = 324,882.06/x
  3. Step 3: Cross multiply
    640,433.34x = 960,615.36 × 324,882.06
  4. Step 4: Simplify right side
    640,433.34x = 312,086,697,024.44
  5. Step 5: Solve for x
    x = 312,086,697,024.44/640,433.34
  6. Step 6: Final answer
    x = 487,305.51

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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.