Home / 800,009.87-1,200,015.96-326,695.28

Finding the Fourth Proportional to 800,009.87, 1,200,015.96 and 326,695.28

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Solution

The fourth proportional to 800,009.87, 1,200,015.96 and 326,695.28 is: 490,043.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,009.87 : 1,200,015.96 = 326,695.28 : x
  2. Step 2: Convert to fraction form
    800,009.87/1,200,015.96 = 326,695.28/x
  3. Step 3: Cross multiply
    800,009.87x = 1,200,015.96 × 326,695.28
  4. Step 4: Simplify right side
    800,009.87x = 392,039,544,669.14
  5. Step 5: Solve for x
    x = 392,039,544,669.14/800,009.87
  6. Step 6: Final answer
    x = 490,043.39

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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.