Home / 780,127.20-1,170,190.80-189,151.20

Finding the Fourth Proportional to 780,127.20, 1,170,190.80 and 189,151.20

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Solution

The fourth proportional to 780,127.20, 1,170,190.80 and 189,151.20 is: 283,726.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,127.20 : 1,170,190.80 = 189,151.20 : x
  2. Step 2: Convert to fraction form
    780,127.20/1,170,190.80 = 189,151.20/x
  3. Step 3: Cross multiply
    780,127.20x = 1,170,190.80 × 189,151.20
  4. Step 4: Simplify right side
    780,127.20x = 221,342,994,048.96
  5. Step 5: Solve for x
    x = 221,342,994,048.96/780,127.20
  6. Step 6: Final answer
    x = 283,726.80

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Similar ratio
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1.5x scale

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.