Home / 764,575.84-1,055,137.62-420,393.97

Finding the Fourth Proportional to 764,575.84, 1,055,137.62 and 420,393.97

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Solution

The fourth proportional to 764,575.84, 1,055,137.62 and 420,393.97 is: 580,156.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,575.84 : 1,055,137.62 = 420,393.97 : x
  2. Step 2: Convert to fraction form
    764,575.84/1,055,137.62 = 420,393.97/x
  3. Step 3: Cross multiply
    764,575.84x = 1,055,137.62 × 420,393.97
  4. Step 4: Simplify right side
    764,575.84x = 443,573,492,968.15
  5. Step 5: Solve for x
    x = 443,573,492,968.15/764,575.84
  6. Step 6: Final answer
    x = 580,156.30

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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.