Home / 764,617.57-1,055,239.47-420,514.13

Finding the Fourth Proportional to 764,617.57, 1,055,239.47 and 420,514.13

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Solution

The fourth proportional to 764,617.57, 1,055,239.47 and 420,514.13 is: 580,346.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,617.57 : 1,055,239.47 = 420,514.13 : x
  2. Step 2: Convert to fraction form
    764,617.57/1,055,239.47 = 420,514.13/x
  3. Step 3: Cross multiply
    764,617.57x = 1,055,239.47 × 420,514.13
  4. Step 4: Simplify right side
    764,617.57x = 443,743,107,668.71
  5. Step 5: Solve for x
    x = 443,743,107,668.71/764,617.57
  6. Step 6: Final answer
    x = 580,346.47

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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.