Home / 429,780.06-644,447.61-192,918.78

Finding the Fourth Proportional to 429,780.06, 644,447.61 and 192,918.78

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Solution

The fourth proportional to 429,780.06, 644,447.61 and 192,918.78 is: 289,278.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,780.06 : 644,447.61 = 192,918.78 : x
  2. Step 2: Convert to fraction form
    429,780.06/644,447.61 = 192,918.78/x
  3. Step 3: Cross multiply
    429,780.06x = 644,447.61 × 192,918.78
  4. Step 4: Simplify right side
    429,780.06x = 124,326,046,695.12
  5. Step 5: Solve for x
    x = 124,326,046,695.12/429,780.06
  6. Step 6: Final answer
    x = 289,278.30

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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.