Home / 764,478.60-1,145,141.10-447,976.20

Finding the Fourth Proportional to 764,478.60, 1,145,141.10 and 447,976.20

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Solution

The fourth proportional to 764,478.60, 1,145,141.10 and 447,976.20 is: 671,040.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,478.60 : 1,145,141.10 = 447,976.20 : x
  2. Step 2: Convert to fraction form
    764,478.60/1,145,141.10 = 447,976.20/x
  3. Step 3: Cross multiply
    764,478.60x = 1,145,141.10 × 447,976.20
  4. Step 4: Simplify right side
    764,478.60x = 512,995,958,441.82
  5. Step 5: Solve for x
    x = 512,995,958,441.82/764,478.60
  6. Step 6: Final answer
    x = 671,040.31

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Double scale
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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.