Home / 666,718.21-1,000,109.49-217,438.48

Finding the Fourth Proportional to 666,718.21, 1,000,109.49 and 217,438.48

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Solution

The fourth proportional to 666,718.21, 1,000,109.49 and 217,438.48 is: 326,168.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,718.21 : 1,000,109.49 = 217,438.48 : x
  2. Step 2: Convert to fraction form
    666,718.21/1,000,109.49 = 217,438.48/x
  3. Step 3: Cross multiply
    666,718.21x = 1,000,109.49 × 217,438.48
  4. Step 4: Simplify right side
    666,718.21x = 217,462,287,339.18
  5. Step 5: Solve for x
    x = 217,462,287,339.18/666,718.21
  6. Step 6: Final answer
    x = 326,168.21

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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.