Home / 639,104.06-882,283.19-397,464.47

Finding the Fourth Proportional to 639,104.06, 882,283.19 and 397,464.47

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Solution

The fourth proportional to 639,104.06, 882,283.19 and 397,464.47 is: 548,699.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,104.06 : 882,283.19 = 397,464.47 : x
  2. Step 2: Convert to fraction form
    639,104.06/882,283.19 = 397,464.47/x
  3. Step 3: Cross multiply
    639,104.06x = 882,283.19 × 397,464.47
  4. Step 4: Simplify right side
    639,104.06x = 350,676,220,503.26
  5. Step 5: Solve for x
    x = 350,676,220,503.26/639,104.06
  6. Step 6: Final answer
    x = 548,699.72

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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.