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Finding the Fourth Proportional to 413,632.77, 620,449.64 and 129,324.80

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Solution

The fourth proportional to 413,632.77, 620,449.64 and 129,324.80 is: 193,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,632.77 : 620,449.64 = 129,324.80 : x
  2. Step 2: Convert to fraction form
    413,632.77/620,449.64 = 129,324.80/x
  3. Step 3: Cross multiply
    413,632.77x = 620,449.64 × 129,324.80
  4. Step 4: Simplify right side
    413,632.77x = 80,239,526,992.54
  5. Step 5: Solve for x
    x = 80,239,526,992.54/413,632.77
  6. Step 6: Final answer
    x = 193,987.36

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1.5x scale

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.