Home / 678,996.36-1,018,546.38-205,720.92

Finding the Fourth Proportional to 678,996.36, 1,018,546.38 and 205,720.92

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Solution

The fourth proportional to 678,996.36, 1,018,546.38 and 205,720.92 is: 308,597.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,996.36 : 1,018,546.38 = 205,720.92 : x
  2. Step 2: Convert to fraction form
    678,996.36/1,018,546.38 = 205,720.92/x
  3. Step 3: Cross multiply
    678,996.36x = 1,018,546.38 × 205,720.92
  4. Step 4: Simplify right side
    678,996.36x = 209,536,298,356.27
  5. Step 5: Solve for x
    x = 209,536,298,356.27/678,996.36
  6. Step 6: Final answer
    x = 308,597.09

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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.