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Finding the Fourth Proportional to 2,168,407.18, 3,251,978.23 and 728,927.88

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Solution

The fourth proportional to 2,168,407.18, 3,251,978.23 and 728,927.88 is: 1,093,179.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168,407.18 : 3,251,978.23 = 728,927.88 : x
  2. Step 2: Convert to fraction form
    2,168,407.18/3,251,978.23 = 728,927.88/x
  3. Step 3: Cross multiply
    2,168,407.18x = 3,251,978.23 × 728,927.88
  4. Step 4: Simplify right side
    2,168,407.18x = 2,370,457,597,000.05
  5. Step 5: Solve for x
    x = 2,370,457,597,000.05/2,168,407.18
  6. Step 6: Final answer
    x = 1,093,179.19

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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.