Home / 780,028.40-1,170,042.60-360,124.40

Finding the Fourth Proportional to 780,028.40, 1,170,042.60 and 360,124.40

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Solution

The fourth proportional to 780,028.40, 1,170,042.60 and 360,124.40 is: 540,186.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,028.40 : 1,170,042.60 = 360,124.40 : x
  2. Step 2: Convert to fraction form
    780,028.40/1,170,042.60 = 360,124.40/x
  3. Step 3: Cross multiply
    780,028.40x = 1,170,042.60 × 360,124.40
  4. Step 4: Simplify right side
    780,028.40x = 421,360,889,299.44
  5. Step 5: Solve for x
    x = 421,360,889,299.44/780,028.40
  6. Step 6: Final answer
    x = 540,186.60

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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.