Home / 764,132.80-1,146,199.20-409,838.80

Finding the Fourth Proportional to 764,132.80, 1,146,199.20 and 409,838.80

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Solution

The fourth proportional to 764,132.80, 1,146,199.20 and 409,838.80 is: 614,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,132.80 : 1,146,199.20 = 409,838.80 : x
  2. Step 2: Convert to fraction form
    764,132.80/1,146,199.20 = 409,838.80/x
  3. Step 3: Cross multiply
    764,132.80x = 1,146,199.20 × 409,838.80
  4. Step 4: Simplify right side
    764,132.80x = 469,756,904,688.96
  5. Step 5: Solve for x
    x = 469,756,904,688.96/764,132.80
  6. Step 6: Final answer
    x = 614,758.20

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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.