Home / 643,227.16-887,707.98-356,839.50

Finding the Fourth Proportional to 643,227.16, 887,707.98 and 356,839.50

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Solution

The fourth proportional to 643,227.16, 887,707.98 and 356,839.50 is: 492,468.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,227.16 : 887,707.98 = 356,839.50 : x
  2. Step 2: Convert to fraction form
    643,227.16/887,707.98 = 356,839.50/x
  3. Step 3: Cross multiply
    643,227.16x = 887,707.98 × 356,839.50
  4. Step 4: Simplify right side
    643,227.16x = 316,769,271,729.21
  5. Step 5: Solve for x
    x = 316,769,271,729.21/643,227.16
  6. Step 6: Final answer
    x = 492,468.74

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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.