Home / 764,983.65-1,055,671.60-420,812.17

Finding the Fourth Proportional to 764,983.65, 1,055,671.60 and 420,812.17

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Solution

The fourth proportional to 764,983.65, 1,055,671.60 and 420,812.17 is: 580,717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,983.65 : 1,055,671.60 = 420,812.17 : x
  2. Step 2: Convert to fraction form
    764,983.65/1,055,671.60 = 420,812.17/x
  3. Step 3: Cross multiply
    764,983.65x = 1,055,671.60 × 420,812.17
  4. Step 4: Simplify right side
    764,983.65x = 444,239,453,112.16
  5. Step 5: Solve for x
    x = 444,239,453,112.16/764,983.65
  6. Step 6: Final answer
    x = 580,717.58

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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.