Home / 1,222,247.85-1,686,689.66-678,388.34

Finding the Fourth Proportional to 1,222,247.85, 1,686,689.66 and 678,388.34

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Solution

The fourth proportional to 1,222,247.85, 1,686,689.66 and 678,388.34 is: 936,169.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,247.85 : 1,686,689.66 = 678,388.34 : x
  2. Step 2: Convert to fraction form
    1,222,247.85/1,686,689.66 = 678,388.34/x
  3. Step 3: Cross multiply
    1,222,247.85x = 1,686,689.66 × 678,388.34
  4. Step 4: Simplify right side
    1,222,247.85x = 1,144,230,586,717.17
  5. Step 5: Solve for x
    x = 1,144,230,586,717.17/1,222,247.85
  6. Step 6: Final answer
    x = 936,169.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.