Home / 639,114.77-882,297.96-397,475.20

Finding the Fourth Proportional to 639,114.77, 882,297.96 and 397,475.20

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Solution

The fourth proportional to 639,114.77, 882,297.96 and 397,475.20 is: 548,714.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,114.77 : 882,297.96 = 397,475.20 : x
  2. Step 2: Convert to fraction form
    639,114.77/882,297.96 = 397,475.20/x
  3. Step 3: Cross multiply
    639,114.77x = 882,297.96 × 397,475.20
  4. Step 4: Simplify right side
    639,114.77x = 350,691,556,123.22
  5. Step 5: Solve for x
    x = 350,691,556,123.22/639,114.77
  6. Step 6: Final answer
    x = 548,714.52

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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.