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Finding the Fourth Proportional to 422,612.11, 634,707.92 and 372,029.23

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Solution

The fourth proportional to 422,612.11, 634,707.92 and 372,029.23 is: 558,739.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,612.11 : 634,707.92 = 372,029.23 : x
  2. Step 2: Convert to fraction form
    422,612.11/634,707.92 = 372,029.23/x
  3. Step 3: Cross multiply
    422,612.11x = 634,707.92 × 372,029.23
  4. Step 4: Simplify right side
    422,612.11x = 236,129,898,752.50
  5. Step 5: Solve for x
    x = 236,129,898,752.50/422,612.11
  6. Step 6: Final answer
    x = 558,739.07

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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.