Home / 429,936.13-644,832.19-130,345.07

Finding the Fourth Proportional to 429,936.13, 644,832.19 and 130,345.07

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Solution

The fourth proportional to 429,936.13, 644,832.19 and 130,345.07 is: 195,495.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,936.13 : 644,832.19 = 130,345.07 : x
  2. Step 2: Convert to fraction form
    429,936.13/644,832.19 = 130,345.07/x
  3. Step 3: Cross multiply
    429,936.13x = 644,832.19 × 130,345.07
  4. Step 4: Simplify right side
    429,936.13x = 84,050,696,943.80
  5. Step 5: Solve for x
    x = 84,050,696,943.80/429,936.13
  6. Step 6: Final answer
    x = 195,495.78

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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.