Home / 643,100.96-887,529.48-356,677.04

Finding the Fourth Proportional to 643,100.96, 887,529.48 and 356,677.04

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Solution

The fourth proportional to 643,100.96, 887,529.48 and 356,677.04 is: 492,242.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,100.96 : 887,529.48 = 356,677.04 : x
  2. Step 2: Convert to fraction form
    643,100.96/887,529.48 = 356,677.04/x
  3. Step 3: Cross multiply
    643,100.96x = 887,529.48 × 356,677.04
  4. Step 4: Simplify right side
    643,100.96x = 316,561,387,839.14
  5. Step 5: Solve for x
    x = 316,561,387,839.14/643,100.96
  6. Step 6: Final answer
    x = 492,242.13

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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.