Home / 428,933.07-643,614.17-192,444.75

Finding the Fourth Proportional to 428,933.07, 643,614.17 and 192,444.75

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Solution

The fourth proportional to 428,933.07, 643,614.17 and 192,444.75 is: 288,763.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,933.07 : 643,614.17 = 192,444.75 : x
  2. Step 2: Convert to fraction form
    428,933.07/643,614.17 = 192,444.75/x
  3. Step 3: Cross multiply
    428,933.07x = 643,614.17 × 192,444.75
  4. Step 4: Simplify right side
    428,933.07x = 123,860,167,079.88
  5. Step 5: Solve for x
    x = 123,860,167,079.88/428,933.07
  6. Step 6: Final answer
    x = 288,763.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.