Home / 426,324.13-639,486.23-126,809.01

Finding the Fourth Proportional to 426,324.13, 639,486.23 and 126,809.01

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Solution

The fourth proportional to 426,324.13, 639,486.23 and 126,809.01 is: 190,213.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,324.13 : 639,486.23 = 126,809.01 : x
  2. Step 2: Convert to fraction form
    426,324.13/639,486.23 = 126,809.01/x
  3. Step 3: Cross multiply
    426,324.13x = 639,486.23 × 126,809.01
  4. Step 4: Simplify right side
    426,324.13x = 81,092,615,100.89
  5. Step 5: Solve for x
    x = 81,092,615,100.89/426,324.13
  6. Step 6: Final answer
    x = 190,213.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.