Home / 769,907.80-1,153,479.30-659,315.80

Finding the Fourth Proportional to 769,907.80, 1,153,479.30 and 659,315.80

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Solution

The fourth proportional to 769,907.80, 1,153,479.30 and 659,315.80 is: 987,789.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,907.80 : 1,153,479.30 = 659,315.80 : x
  2. Step 2: Convert to fraction form
    769,907.80/1,153,479.30 = 659,315.80/x
  3. Step 3: Cross multiply
    769,907.80x = 1,153,479.30 × 659,315.80
  4. Step 4: Simplify right side
    769,907.80x = 760,507,127,462.94
  5. Step 5: Solve for x
    x = 760,507,127,462.94/769,907.80
  6. Step 6: Final answer
    x = 987,789.87

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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.