Home / 463,933.20-640,534.86-356,310.12

Finding the Fourth Proportional to 463,933.20, 640,534.86 and 356,310.12

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Solution

The fourth proportional to 463,933.20, 640,534.86 and 356,310.12 is: 491,943.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,933.20 : 640,534.86 = 356,310.12 : x
  2. Step 2: Convert to fraction form
    463,933.20/640,534.86 = 356,310.12/x
  3. Step 3: Cross multiply
    463,933.20x = 640,534.86 × 356,310.12
  4. Step 4: Simplify right side
    463,933.20x = 228,229,052,830.78
  5. Step 5: Solve for x
    x = 228,229,052,830.78/463,933.20
  6. Step 6: Final answer
    x = 491,943.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.