Home / 685,118.64-1,027,809.72-211,787.04

Finding the Fourth Proportional to 685,118.64, 1,027,809.72 and 211,787.04

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Solution

The fourth proportional to 685,118.64, 1,027,809.72 and 211,787.04 is: 317,721.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,118.64 : 1,027,809.72 = 211,787.04 : x
  2. Step 2: Convert to fraction form
    685,118.64/1,027,809.72 = 211,787.04/x
  3. Step 3: Cross multiply
    685,118.64x = 1,027,809.72 × 211,787.04
  4. Step 4: Simplify right side
    685,118.64x = 217,676,778,282.03
  5. Step 5: Solve for x
    x = 217,676,778,282.03/685,118.64
  6. Step 6: Final answer
    x = 317,721.29

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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.