Home / 780,039.70-1,170,059.55-360,135.70

Finding the Fourth Proportional to 780,039.70, 1,170,059.55 and 360,135.70

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Solution

The fourth proportional to 780,039.70, 1,170,059.55 and 360,135.70 is: 540,203.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,039.70 : 1,170,059.55 = 360,135.70 : x
  2. Step 2: Convert to fraction form
    780,039.70/1,170,059.55 = 360,135.70/x
  3. Step 3: Cross multiply
    780,039.70x = 1,170,059.55 × 360,135.70
  4. Step 4: Simplify right side
    780,039.70x = 421,380,215,080.94
  5. Step 5: Solve for x
    x = 421,380,215,080.94/780,039.70
  6. Step 6: Final answer
    x = 540,203.55

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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.