Home / 764,124.30-1,146,186.45-409,830.30

Finding the Fourth Proportional to 764,124.30, 1,146,186.45 and 409,830.30

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Solution

The fourth proportional to 764,124.30, 1,146,186.45 and 409,830.30 is: 614,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,124.30 : 1,146,186.45 = 409,830.30 : x
  2. Step 2: Convert to fraction form
    764,124.30/1,146,186.45 = 409,830.30/x
  3. Step 3: Cross multiply
    764,124.30x = 1,146,186.45 × 409,830.30
  4. Step 4: Simplify right side
    764,124.30x = 469,741,936,659.44
  5. Step 5: Solve for x
    x = 469,741,936,659.44/764,124.30
  6. Step 6: Final answer
    x = 614,745.45

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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.