Home / 764,612.40-1,055,232.29-420,508.92

Finding the Fourth Proportional to 764,612.40, 1,055,232.29 and 420,508.92

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Solution

The fourth proportional to 764,612.40, 1,055,232.29 and 420,508.92 is: 580,339.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,612.40 : 1,055,232.29 = 420,508.92 : x
  2. Step 2: Convert to fraction form
    764,612.40/1,055,232.29 = 420,508.92/x
  3. Step 3: Cross multiply
    764,612.40x = 1,055,232.29 × 420,508.92
  4. Step 4: Simplify right side
    764,612.40x = 443,734,583,238.32
  5. Step 5: Solve for x
    x = 443,734,583,238.32/764,612.40
  6. Step 6: Final answer
    x = 580,339.25

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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.