Home / 780,147.90-1,170,221.85-360,243.90

Finding the Fourth Proportional to 780,147.90, 1,170,221.85 and 360,243.90

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Solution

The fourth proportional to 780,147.90, 1,170,221.85 and 360,243.90 is: 540,365.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,147.90 : 1,170,221.85 = 360,243.90 : x
  2. Step 2: Convert to fraction form
    780,147.90/1,170,221.85 = 360,243.90/x
  3. Step 3: Cross multiply
    780,147.90x = 1,170,221.85 × 360,243.90
  4. Step 4: Simplify right side
    780,147.90x = 421,565,283,109.22
  5. Step 5: Solve for x
    x = 421,565,283,109.22/780,147.90
  6. Step 6: Final answer
    x = 540,365.85

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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.