Home / 678,768.36-1,018,165.50-205,451.88

Finding the Fourth Proportional to 678,768.36, 1,018,165.50 and 205,451.88

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Solution

The fourth proportional to 678,768.36, 1,018,165.50 and 205,451.88 is: 308,181.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,768.36 : 1,018,165.50 = 205,451.88 : x
  2. Step 2: Convert to fraction form
    678,768.36/1,018,165.50 = 205,451.88/x
  3. Step 3: Cross multiply
    678,768.36x = 1,018,165.50 × 205,451.88
  4. Step 4: Simplify right side
    678,768.36x = 209,184,016,126.14
  5. Step 5: Solve for x
    x = 209,184,016,126.14/678,768.36
  6. Step 6: Final answer
    x = 308,181.74

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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.