Home / 698,936.80-1,048,405.20-687,272.80

Finding the Fourth Proportional to 698,936.80, 1,048,405.20 and 687,272.80

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Solution

The fourth proportional to 698,936.80, 1,048,405.20 and 687,272.80 is: 1,030,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,936.80 : 1,048,405.20 = 687,272.80 : x
  2. Step 2: Convert to fraction form
    698,936.80/1,048,405.20 = 687,272.80/x
  3. Step 3: Cross multiply
    698,936.80x = 1,048,405.20 × 687,272.80
  4. Step 4: Simplify right side
    698,936.80x = 720,540,377,338.56
  5. Step 5: Solve for x
    x = 720,540,377,338.56/698,936.80
  6. Step 6: Final answer
    x = 1,030,909.20

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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.