Home / 678,814.20-1,018,221.30-205,523.10

Finding the Fourth Proportional to 678,814.20, 1,018,221.30 and 205,523.10

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Solution

The fourth proportional to 678,814.20, 1,018,221.30 and 205,523.10 is: 308,284.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,814.20 : 1,018,221.30 = 205,523.10 : x
  2. Step 2: Convert to fraction form
    678,814.20/1,018,221.30 = 205,523.10/x
  3. Step 3: Cross multiply
    678,814.20x = 1,018,221.30 × 205,523.10
  4. Step 4: Simplify right side
    678,814.20x = 209,267,998,062.03
  5. Step 5: Solve for x
    x = 209,267,998,062.03/678,814.20
  6. Step 6: Final answer
    x = 308,284.65

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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.