Home / 679,418.80-1,018,998.60-206,119.60

Finding the Fourth Proportional to 679,418.80, 1,018,998.60 and 206,119.60

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Solution

The fourth proportional to 679,418.80, 1,018,998.60 and 206,119.60 is: 309,140.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,418.80 : 1,018,998.60 = 206,119.60 : x
  2. Step 2: Convert to fraction form
    679,418.80/1,018,998.60 = 206,119.60/x
  3. Step 3: Cross multiply
    679,418.80x = 1,018,998.60 × 206,119.60
  4. Step 4: Simplify right side
    679,418.80x = 210,035,583,832.56
  5. Step 5: Solve for x
    x = 210,035,583,832.56/679,418.80
  6. Step 6: Final answer
    x = 309,140.08

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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.