Home / 764,626.32-1,055,210.86-420,476.36

Finding the Fourth Proportional to 764,626.32, 1,055,210.86 and 420,476.36

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Solution

The fourth proportional to 764,626.32, 1,055,210.86 and 420,476.36 is: 580,271.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,626.32 : 1,055,210.86 = 420,476.36 : x
  2. Step 2: Convert to fraction form
    764,626.32/1,055,210.86 = 420,476.36/x
  3. Step 3: Cross multiply
    764,626.32x = 1,055,210.86 × 420,476.36
  4. Step 4: Simplify right side
    764,626.32x = 443,691,216,169.22
  5. Step 5: Solve for x
    x = 443,691,216,169.22/764,626.32
  6. Step 6: Final answer
    x = 580,271.96

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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.