Home / 764,048.20-1,146,302.70-409,232.20

Finding the Fourth Proportional to 764,048.20, 1,146,302.70 and 409,232.20

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Solution

The fourth proportional to 764,048.20, 1,146,302.70 and 409,232.20 is: 613,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,048.20 : 1,146,302.70 = 409,232.20 : x
  2. Step 2: Convert to fraction form
    764,048.20/1,146,302.70 = 409,232.20/x
  3. Step 3: Cross multiply
    764,048.20x = 1,146,302.70 × 409,232.20
  4. Step 4: Simplify right side
    764,048.20x = 469,103,975,786.94
  5. Step 5: Solve for x
    x = 469,103,975,786.94/764,048.20
  6. Step 6: Final answer
    x = 613,971.70

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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.