Home / 764,311.77-1,054,763.43-420,162.21

Finding the Fourth Proportional to 764,311.77, 1,054,763.43 and 420,162.21

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Solution

The fourth proportional to 764,311.77, 1,054,763.43 and 420,162.21 is: 579,831.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,311.77 : 1,054,763.43 = 420,162.21 : x
  2. Step 2: Convert to fraction form
    764,311.77/1,054,763.43 = 420,162.21/x
  3. Step 3: Cross multiply
    764,311.77x = 1,054,763.43 × 420,162.21
  4. Step 4: Simplify right side
    764,311.77x = 443,171,733,775.98
  5. Step 5: Solve for x
    x = 443,171,733,775.98/764,311.77
  6. Step 6: Final answer
    x = 579,831.10

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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.