Home / 764,709.15-1,055,226.13-420,539.14

Finding the Fourth Proportional to 764,709.15, 1,055,226.13 and 420,539.14

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Solution

The fourth proportional to 764,709.15, 1,055,226.13 and 420,539.14 is: 580,304.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,709.15 : 1,055,226.13 = 420,539.14 : x
  2. Step 2: Convert to fraction form
    764,709.15/1,055,226.13 = 420,539.14/x
  3. Step 3: Cross multiply
    764,709.15x = 1,055,226.13 × 420,539.14
  4. Step 4: Simplify right side
    764,709.15x = 443,763,891,848.95
  5. Step 5: Solve for x
    x = 443,763,891,848.95/764,709.15
  6. Step 6: Final answer
    x = 580,304.15

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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.