Home / 429,769.40-644,432.63-192,909.06

Finding the Fourth Proportional to 429,769.40, 644,432.63 and 192,909.06

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Solution

The fourth proportional to 429,769.40, 644,432.63 and 192,909.06 is: 289,264.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,769.40 : 644,432.63 = 192,909.06 : x
  2. Step 2: Convert to fraction form
    429,769.40/644,432.63 = 192,909.06/x
  3. Step 3: Cross multiply
    429,769.40x = 644,432.63 × 192,909.06
  4. Step 4: Simplify right side
    429,769.40x = 124,316,891,922.08
  5. Step 5: Solve for x
    x = 124,316,891,922.08/429,769.40
  6. Step 6: Final answer
    x = 289,264.18

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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.