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Finding the Fourth Proportional to 408,693.22, 613,128.06 and 124,406.00

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Solution

The fourth proportional to 408,693.22, 613,128.06 and 124,406.00 is: 186,635.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,693.22 : 613,128.06 = 124,406.00 : x
  2. Step 2: Convert to fraction form
    408,693.22/613,128.06 = 124,406.00/x
  3. Step 3: Cross multiply
    408,693.22x = 613,128.06 × 124,406.00
  4. Step 4: Simplify right side
    408,693.22x = 76,276,806,366.72
  5. Step 5: Solve for x
    x = 76,276,806,366.72/408,693.22
  6. Step 6: Final answer
    x = 186,635.85

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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.