Home / 639,100.64-882,278.48-397,461.06

Finding the Fourth Proportional to 639,100.64, 882,278.48 and 397,461.06

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Solution

The fourth proportional to 639,100.64, 882,278.48 and 397,461.06 is: 548,695.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,100.64 : 882,278.48 = 397,461.06 : x
  2. Step 2: Convert to fraction form
    639,100.64/882,278.48 = 397,461.06/x
  3. Step 3: Cross multiply
    639,100.64x = 882,278.48 × 397,461.06
  4. Step 4: Simplify right side
    639,100.64x = 350,671,340,869.64
  5. Step 5: Solve for x
    x = 350,671,340,869.64/639,100.64
  6. Step 6: Final answer
    x = 548,695.02

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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.