Home / 780,160.20-1,170,240.30-721,840.20

Finding the Fourth Proportional to 780,160.20, 1,170,240.30 and 721,840.20

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Solution

The fourth proportional to 780,160.20, 1,170,240.30 and 721,840.20 is: 1,082,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,160.20 : 1,170,240.30 = 721,840.20 : x
  2. Step 2: Convert to fraction form
    780,160.20/1,170,240.30 = 721,840.20/x
  3. Step 3: Cross multiply
    780,160.20x = 1,170,240.30 × 721,840.20
  4. Step 4: Simplify right side
    780,160.20x = 844,726,492,200.06
  5. Step 5: Solve for x
    x = 844,726,492,200.06/780,160.20
  6. Step 6: Final answer
    x = 1,082,760.30

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Double scale
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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.