Home / 643,422.46-887,924.05-356,942.55

Finding the Fourth Proportional to 643,422.46, 887,924.05 and 356,942.55

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Solution

The fourth proportional to 643,422.46, 887,924.05 and 356,942.55 is: 492,581.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,422.46 : 887,924.05 = 356,942.55 : x
  2. Step 2: Convert to fraction form
    643,422.46/887,924.05 = 356,942.55/x
  3. Step 3: Cross multiply
    643,422.46x = 887,924.05 × 356,942.55
  4. Step 4: Simplify right side
    643,422.46x = 316,937,873,060.01
  5. Step 5: Solve for x
    x = 316,937,873,060.01/643,422.46
  6. Step 6: Final answer
    x = 492,581.30

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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.