Home / 687,744.80-1,031,617.20-677,247.20

Finding the Fourth Proportional to 687,744.80, 1,031,617.20 and 677,247.20

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Solution

The fourth proportional to 687,744.80, 1,031,617.20 and 677,247.20 is: 1,015,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,744.80 : 1,031,617.20 = 677,247.20 : x
  2. Step 2: Convert to fraction form
    687,744.80/1,031,617.20 = 677,247.20/x
  3. Step 3: Cross multiply
    687,744.80x = 1,031,617.20 × 677,247.20
  4. Step 4: Simplify right side
    687,744.80x = 698,659,860,171.84
  5. Step 5: Solve for x
    x = 698,659,860,171.84/687,744.80
  6. Step 6: Final answer
    x = 1,015,870.80

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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.