Home / 768,136.80-1,152,205.20-693,487.20

Finding the Fourth Proportional to 768,136.80, 1,152,205.20 and 693,487.20

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Solution

The fourth proportional to 768,136.80, 1,152,205.20 and 693,487.20 is: 1,040,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,136.80 : 1,152,205.20 = 693,487.20 : x
  2. Step 2: Convert to fraction form
    768,136.80/1,152,205.20 = 693,487.20/x
  3. Step 3: Cross multiply
    768,136.80x = 1,152,205.20 × 693,487.20
  4. Step 4: Simplify right side
    768,136.80x = 799,039,557,973.44
  5. Step 5: Solve for x
    x = 799,039,557,973.44/768,136.80
  6. Step 6: Final answer
    x = 1,040,230.80

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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.