Home / 764,612.64-1,055,232.63-420,509.16

Finding the Fourth Proportional to 764,612.64, 1,055,232.63 and 420,509.16

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Solution

The fourth proportional to 764,612.64, 1,055,232.63 and 420,509.16 is: 580,339.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,612.64 : 1,055,232.63 = 420,509.16 : x
  2. Step 2: Convert to fraction form
    764,612.64/1,055,232.63 = 420,509.16/x
  3. Step 3: Cross multiply
    764,612.64x = 1,055,232.63 × 420,509.16
  4. Step 4: Simplify right side
    764,612.64x = 443,734,986,845.89
  5. Step 5: Solve for x
    x = 443,734,986,845.89/764,612.64
  6. Step 6: Final answer
    x = 580,339.59

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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.