Home / 429,934.13-644,829.20-130,343.07

Finding the Fourth Proportional to 429,934.13, 644,829.20 and 130,343.07

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Solution

The fourth proportional to 429,934.13, 644,829.20 and 130,343.07 is: 195,492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,934.13 : 644,829.20 = 130,343.07 : x
  2. Step 2: Convert to fraction form
    429,934.13/644,829.20 = 130,343.07/x
  3. Step 3: Cross multiply
    429,934.13x = 644,829.20 × 130,343.07
  4. Step 4: Simplify right side
    429,934.13x = 84,049,016,901.93
  5. Step 5: Solve for x
    x = 84,049,016,901.93/429,934.13
  6. Step 6: Final answer
    x = 195,492.78

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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.