Home / 666,718.68-1,000,138.79-217,324.20

Finding the Fourth Proportional to 666,718.68, 1,000,138.79 and 217,324.20

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Solution

The fourth proportional to 666,718.68, 1,000,138.79 and 217,324.20 is: 326,006.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,718.68 : 1,000,138.79 = 217,324.20 : x
  2. Step 2: Convert to fraction form
    666,718.68/1,000,138.79 = 217,324.20/x
  3. Step 3: Cross multiply
    666,718.68x = 1,000,138.79 × 217,324.20
  4. Step 4: Simplify right side
    666,718.68x = 217,354,361,339.10
  5. Step 5: Solve for x
    x = 217,354,361,339.10/666,718.68
  6. Step 6: Final answer
    x = 326,006.11

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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.