Home / 639,345.54-882,262.35-397,621.29

Finding the Fourth Proportional to 639,345.54, 882,262.35 and 397,621.29

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Solution

The fourth proportional to 639,345.54, 882,262.35 and 397,621.29 is: 548,695.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,345.54 : 882,262.35 = 397,621.29 : x
  2. Step 2: Convert to fraction form
    639,345.54/882,262.35 = 397,621.29/x
  3. Step 3: Cross multiply
    639,345.54x = 882,262.35 × 397,621.29
  4. Step 4: Simplify right side
    639,345.54x = 350,806,293,725.43
  5. Step 5: Solve for x
    x = 350,806,293,725.43/639,345.54
  6. Step 6: Final answer
    x = 548,695.93

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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.