Home / 693,412.80-1,040,119.20-408,811.20

Finding the Fourth Proportional to 693,412.80, 1,040,119.20 and 408,811.20

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Solution

The fourth proportional to 693,412.80, 1,040,119.20 and 408,811.20 is: 613,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,412.80 : 1,040,119.20 = 408,811.20 : x
  2. Step 2: Convert to fraction form
    693,412.80/1,040,119.20 = 408,811.20/x
  3. Step 3: Cross multiply
    693,412.80x = 1,040,119.20 × 408,811.20
  4. Step 4: Simplify right side
    693,412.80x = 425,212,378,295.04
  5. Step 5: Solve for x
    x = 425,212,378,295.04/693,412.80
  6. Step 6: Final answer
    x = 613,216.80

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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.