Home / 764,109.60-1,146,164.40-409,815.60

Finding the Fourth Proportional to 764,109.60, 1,146,164.40 and 409,815.60

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Solution

The fourth proportional to 764,109.60, 1,146,164.40 and 409,815.60 is: 614,723.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,109.60 : 1,146,164.40 = 409,815.60 : x
  2. Step 2: Convert to fraction form
    764,109.60/1,146,164.40 = 409,815.60/x
  3. Step 3: Cross multiply
    764,109.60x = 1,146,164.40 × 409,815.60
  4. Step 4: Simplify right side
    764,109.60x = 469,716,051,284.64
  5. Step 5: Solve for x
    x = 469,716,051,284.64/764,109.60
  6. Step 6: Final answer
    x = 614,723.40

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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.