Home / 804,839.30-1,109,568.39-642,048.32

Finding the Fourth Proportional to 804,839.30, 1,109,568.39 and 642,048.32

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Solution

The fourth proportional to 804,839.30, 1,109,568.39 and 642,048.32 is: 885,141.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,839.30 : 1,109,568.39 = 642,048.32 : x
  2. Step 2: Convert to fraction form
    804,839.30/1,109,568.39 = 642,048.32/x
  3. Step 3: Cross multiply
    804,839.30x = 1,109,568.39 × 642,048.32
  4. Step 4: Simplify right side
    804,839.30x = 712,396,520,724.61
  5. Step 5: Solve for x
    x = 712,396,520,724.61/804,839.30
  6. Step 6: Final answer
    x = 885,141.32

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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.