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Finding the Fourth Proportional to 1,322,115.58, 1,983,174.03 and 872,731.42

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Solution

The fourth proportional to 1,322,115.58, 1,983,174.03 and 872,731.42 is: 1,309,097.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322,115.58 : 1,983,174.03 = 872,731.42 : x
  2. Step 2: Convert to fraction form
    1,322,115.58/1,983,174.03 = 872,731.42/x
  3. Step 3: Cross multiply
    1,322,115.58x = 1,983,174.03 × 872,731.42
  4. Step 4: Simplify right side
    1,322,115.58x = 1,730,778,287,309.02
  5. Step 5: Solve for x
    x = 1,730,778,287,309.02/1,322,115.58
  6. Step 6: Final answer
    x = 1,309,097.57

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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.