Home / 639,109.08-882,290.14-397,469.51

Finding the Fourth Proportional to 639,109.08, 882,290.14 and 397,469.51

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Solution

The fourth proportional to 639,109.08, 882,290.14 and 397,469.51 is: 548,706.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,109.08 : 882,290.14 = 397,469.51 : x
  2. Step 2: Convert to fraction form
    639,109.08/882,290.14 = 397,469.51/x
  3. Step 3: Cross multiply
    639,109.08x = 882,290.14 × 397,469.51
  4. Step 4: Simplify right side
    639,109.08x = 350,683,427,527.10
  5. Step 5: Solve for x
    x = 350,683,427,527.10/639,109.08
  6. Step 6: Final answer
    x = 548,706.69

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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.