Home / 764,459.20-1,146,919.20-409,643.20

Finding the Fourth Proportional to 764,459.20, 1,146,919.20 and 409,643.20

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Solution

The fourth proportional to 764,459.20, 1,146,919.20 and 409,643.20 is: 614,588.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,459.20 : 1,146,919.20 = 409,643.20 : x
  2. Step 2: Convert to fraction form
    764,459.20/1,146,919.20 = 409,643.20/x
  3. Step 3: Cross multiply
    764,459.20x = 1,146,919.20 × 409,643.20
  4. Step 4: Simplify right side
    764,459.20x = 469,827,651,229.44
  5. Step 5: Solve for x
    x = 469,827,651,229.44/764,459.20
  6. Step 6: Final answer
    x = 614,588.26

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Half scale
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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.