Home / 643,204.10-887,563.50-356,723.30

Finding the Fourth Proportional to 643,204.10, 887,563.50 and 356,723.30

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Solution

The fourth proportional to 643,204.10, 887,563.50 and 356,723.30 is: 492,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,204.10 : 887,563.50 = 356,723.30 : x
  2. Step 2: Convert to fraction form
    643,204.10/887,563.50 = 356,723.30/x
  3. Step 3: Cross multiply
    643,204.10x = 887,563.50 × 356,723.30
  4. Step 4: Simplify right side
    643,204.10x = 316,614,580,679.55
  5. Step 5: Solve for x
    x = 316,614,580,679.55/643,204.10
  6. Step 6: Final answer
    x = 492,245.90

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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.