Home / 764,618.07-1,055,240.16-420,514.63

Finding the Fourth Proportional to 764,618.07, 1,055,240.16 and 420,514.63

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Solution

The fourth proportional to 764,618.07, 1,055,240.16 and 420,514.63 is: 580,347.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,618.07 : 1,055,240.16 = 420,514.63 : x
  2. Step 2: Convert to fraction form
    764,618.07/1,055,240.16 = 420,514.63/x
  3. Step 3: Cross multiply
    764,618.07x = 1,055,240.16 × 420,514.63
  4. Step 4: Simplify right side
    764,618.07x = 443,743,925,443.54
  5. Step 5: Solve for x
    x = 443,743,925,443.54/764,618.07
  6. Step 6: Final answer
    x = 580,347.16

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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.