Home / 764,578.90-1,055,145.94-420,440.93

Finding the Fourth Proportional to 764,578.90, 1,055,145.94 and 420,440.93

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Solution

The fourth proportional to 764,578.90, 1,055,145.94 and 420,440.93 is: 580,223.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,578.90 : 1,055,145.94 = 420,440.93 : x
  2. Step 2: Convert to fraction form
    764,578.90/1,055,145.94 = 420,440.93/x
  3. Step 3: Cross multiply
    764,578.90x = 1,055,145.94 × 420,440.93
  4. Step 4: Simplify right side
    764,578.90x = 443,626,540,294.27
  5. Step 5: Solve for x
    x = 443,626,540,294.27/764,578.90
  6. Step 6: Final answer
    x = 580,223.37

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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.