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Finding the Fourth Proportional to 873,489.64, 1,309,454.70 and 340,886.56

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Solution

The fourth proportional to 873,489.64, 1,309,454.70 and 340,886.56 is: 511,025.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,489.64 : 1,309,454.70 = 340,886.56 : x
  2. Step 2: Convert to fraction form
    873,489.64/1,309,454.70 = 340,886.56/x
  3. Step 3: Cross multiply
    873,489.64x = 1,309,454.70 × 340,886.56
  4. Step 4: Simplify right side
    873,489.64x = 446,375,508,158.83
  5. Step 5: Solve for x
    x = 446,375,508,158.83/873,489.64
  6. Step 6: Final answer
    x = 511,025.53

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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.