Home / 764,721.80-1,147,082.70-484,555.40

Finding the Fourth Proportional to 764,721.80, 1,147,082.70 and 484,555.40

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Solution

The fourth proportional to 764,721.80, 1,147,082.70 and 484,555.40 is: 726,833.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,721.80 : 1,147,082.70 = 484,555.40 : x
  2. Step 2: Convert to fraction form
    764,721.80/1,147,082.70 = 484,555.40/x
  3. Step 3: Cross multiply
    764,721.80x = 1,147,082.70 × 484,555.40
  4. Step 4: Simplify right side
    764,721.80x = 555,825,116,531.58
  5. Step 5: Solve for x
    x = 555,825,116,531.58/764,721.80
  6. Step 6: Final answer
    x = 726,833.10

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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.