Home / 429,137.10-644,129.38-322,149.06

Finding the Fourth Proportional to 429,137.10, 644,129.38 and 322,149.06

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Solution

The fourth proportional to 429,137.10, 644,129.38 and 322,149.06 is: 483,541.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,137.10 : 644,129.38 = 322,149.06 : x
  2. Step 2: Convert to fraction form
    429,137.10/644,129.38 = 322,149.06/x
  3. Step 3: Cross multiply
    429,137.10x = 644,129.38 × 322,149.06
  4. Step 4: Simplify right side
    429,137.10x = 207,505,674,285.38
  5. Step 5: Solve for x
    x = 207,505,674,285.38/429,137.10
  6. Step 6: Final answer
    x = 483,541.68

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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.