Home / 764,821.36-1,055,479.04-420,671.80

Finding the Fourth Proportional to 764,821.36, 1,055,479.04 and 420,671.80

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Solution

The fourth proportional to 764,821.36, 1,055,479.04 and 420,671.80 is: 580,541.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,821.36 : 1,055,479.04 = 420,671.80 : x
  2. Step 2: Convert to fraction form
    764,821.36/1,055,479.04 = 420,671.80/x
  3. Step 3: Cross multiply
    764,821.36x = 1,055,479.04 × 420,671.80
  4. Step 4: Simplify right side
    764,821.36x = 444,010,267,619.07
  5. Step 5: Solve for x
    x = 444,010,267,619.07/764,821.36
  6. Step 6: Final answer
    x = 580,541.14

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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.