Home / 768,007.20-1,152,011.04-687,136.80

Finding the Fourth Proportional to 768,007.20, 1,152,011.04 and 687,136.80

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Solution

The fourth proportional to 768,007.20, 1,152,011.04 and 687,136.80 is: 1,030,705.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,007.20 : 1,152,011.04 = 687,136.80 : x
  2. Step 2: Convert to fraction form
    768,007.20/1,152,011.04 = 687,136.80/x
  3. Step 3: Cross multiply
    768,007.20x = 1,152,011.04 × 687,136.80
  4. Step 4: Simplify right side
    768,007.20x = 791,589,179,590.27
  5. Step 5: Solve for x
    x = 791,589,179,590.27/768,007.20
  6. Step 6: Final answer
    x = 1,030,705.41

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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.