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Finding the Fourth Proportional to 446,387.78, 669,615.87 and 126,534.29

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Solution

The fourth proportional to 446,387.78, 669,615.87 and 126,534.29 is: 189,811.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,387.78 : 669,615.87 = 126,534.29 : x
  2. Step 2: Convert to fraction form
    446,387.78/669,615.87 = 126,534.29/x
  3. Step 3: Cross multiply
    446,387.78x = 669,615.87 × 126,534.29
  4. Step 4: Simplify right side
    446,387.78x = 84,729,365,809.61
  5. Step 5: Solve for x
    x = 84,729,365,809.61/446,387.78
  6. Step 6: Final answer
    x = 189,811.12

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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.