Home / 859,321.32-1,288,982.52-326,719.32

Finding the Fourth Proportional to 859,321.32, 1,288,982.52 and 326,719.32

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Solution

The fourth proportional to 859,321.32, 1,288,982.52 and 326,719.32 is: 490,079.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,321.32 : 1,288,982.52 = 326,719.32 : x
  2. Step 2: Convert to fraction form
    859,321.32/1,288,982.52 = 326,719.32/x
  3. Step 3: Cross multiply
    859,321.32x = 1,288,982.52 × 326,719.32
  4. Step 4: Simplify right side
    859,321.32x = 421,135,492,426.29
  5. Step 5: Solve for x
    x = 421,135,492,426.29/859,321.32
  6. Step 6: Final answer
    x = 490,079.19

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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.