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Finding the Fourth Proportional to 672,959, 1,009,629.18 and 273,886.20

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Solution

The fourth proportional to 672,959, 1,009,629.18 and 273,886.20 is: 410,906.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,959 : 1,009,629.18 = 273,886.20 : x
  2. Step 2: Convert to fraction form
    672,959/1,009,629.18 = 273,886.20/x
  3. Step 3: Cross multiply
    672,959x = 1,009,629.18 × 273,886.20
  4. Step 4: Simplify right side
    672,959x = 276,523,499,519.32
  5. Step 5: Solve for x
    x = 276,523,499,519.32/672,959
  6. Step 6: Final answer
    x = 410,906.90

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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.