Home / 764,983.90-1,055,671.94-420,812.42

Finding the Fourth Proportional to 764,983.90, 1,055,671.94 and 420,812.42

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Solution

The fourth proportional to 764,983.90, 1,055,671.94 and 420,812.42 is: 580,717.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,983.90 : 1,055,671.94 = 420,812.42 : x
  2. Step 2: Convert to fraction form
    764,983.90/1,055,671.94 = 420,812.42/x
  3. Step 3: Cross multiply
    764,983.90x = 1,055,671.94 × 420,812.42
  4. Step 4: Simplify right side
    764,983.90x = 444,239,863,797.50
  5. Step 5: Solve for x
    x = 444,239,863,797.50/764,983.90
  6. Step 6: Final answer
    x = 580,717.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.