Home / 1,188,589.84-1,640,244.28-644,724.26

Finding the Fourth Proportional to 1,188,589.84, 1,640,244.28 and 644,724.26

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Solution

The fourth proportional to 1,188,589.84, 1,640,244.28 and 644,724.26 is: 889,714.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,589.84 : 1,640,244.28 = 644,724.26 : x
  2. Step 2: Convert to fraction form
    1,188,589.84/1,640,244.28 = 644,724.26/x
  3. Step 3: Cross multiply
    1,188,589.84x = 1,640,244.28 × 644,724.26
  4. Step 4: Simplify right side
    1,188,589.84x = 1,057,505,279,642.23
  5. Step 5: Solve for x
    x = 1,057,505,279,642.23/1,188,589.84
  6. Step 6: Final answer
    x = 889,714.22

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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.