Home / 639,629.46-882,688.08-353,151.29

Finding the Fourth Proportional to 639,629.46, 882,688.08 and 353,151.29

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Solution

The fourth proportional to 639,629.46, 882,688.08 and 353,151.29 is: 487,348.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,629.46 : 882,688.08 = 353,151.29 : x
  2. Step 2: Convert to fraction form
    639,629.46/882,688.08 = 353,151.29/x
  3. Step 3: Cross multiply
    639,629.46x = 882,688.08 × 353,151.29
  4. Step 4: Simplify right side
    639,629.46x = 311,722,437,650.66
  5. Step 5: Solve for x
    x = 311,722,437,650.66/639,629.46
  6. Step 6: Final answer
    x = 487,348.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.