Home / 678,872.26-1,018,439.61-229,666.11

Finding the Fourth Proportional to 678,872.26, 1,018,439.61 and 229,666.11

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Solution

The fourth proportional to 678,872.26, 1,018,439.61 and 229,666.11 is: 344,543.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,872.26 : 1,018,439.61 = 229,666.11 : x
  2. Step 2: Convert to fraction form
    678,872.26/1,018,439.61 = 229,666.11/x
  3. Step 3: Cross multiply
    678,872.26x = 1,018,439.61 × 229,666.11
  4. Step 4: Simplify right side
    678,872.26x = 233,901,063,498.62
  5. Step 5: Solve for x
    x = 233,901,063,498.62/678,872.26
  6. Step 6: Final answer
    x = 344,543.56

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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.