Home / 792,139.80-1,188,209.70-259,714.65

Finding the Fourth Proportional to 792,139.80, 1,188,209.70 and 259,714.65

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Solution

The fourth proportional to 792,139.80, 1,188,209.70 and 259,714.65 is: 389,571.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,139.80 : 1,188,209.70 = 259,714.65 : x
  2. Step 2: Convert to fraction form
    792,139.80/1,188,209.70 = 259,714.65/x
  3. Step 3: Cross multiply
    792,139.80x = 1,188,209.70 × 259,714.65
  4. Step 4: Simplify right side
    792,139.80x = 308,595,466,362.11
  5. Step 5: Solve for x
    x = 308,595,466,362.11/792,139.80
  6. Step 6: Final answer
    x = 389,571.98

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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.