Home / 684,860.70-1,027,400.49-211,434.78

Finding the Fourth Proportional to 684,860.70, 1,027,400.49 and 211,434.78

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Solution

The fourth proportional to 684,860.70, 1,027,400.49 and 211,434.78 is: 317,185.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,860.70 : 1,027,400.49 = 211,434.78 : x
  2. Step 2: Convert to fraction form
    684,860.70/1,027,400.49 = 211,434.78/x
  3. Step 3: Cross multiply
    684,860.70x = 1,027,400.49 × 211,434.78
  4. Step 4: Simplify right side
    684,860.70x = 217,228,196,575.04
  5. Step 5: Solve for x
    x = 217,228,196,575.04/684,860.70
  6. Step 6: Final answer
    x = 317,185.96

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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.