Home / 678,894.62-1,018,391.13-205,616.88

Finding the Fourth Proportional to 678,894.62, 1,018,391.13 and 205,616.88

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Solution

The fourth proportional to 678,894.62, 1,018,391.13 and 205,616.88 is: 308,440.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,894.62 : 1,018,391.13 = 205,616.88 : x
  2. Step 2: Convert to fraction form
    678,894.62/1,018,391.13 = 205,616.88/x
  3. Step 3: Cross multiply
    678,894.62x = 1,018,391.13 × 205,616.88
  4. Step 4: Simplify right side
    678,894.62x = 209,398,406,770.27
  5. Step 5: Solve for x
    x = 209,398,406,770.27/678,894.62
  6. Step 6: Final answer
    x = 308,440.22

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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.