Home / 764,594.96-1,055,168.17-420,457.28

Finding the Fourth Proportional to 764,594.96, 1,055,168.17 and 420,457.28

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Solution

The fourth proportional to 764,594.96, 1,055,168.17 and 420,457.28 is: 580,245.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,594.96 : 1,055,168.17 = 420,457.28 : x
  2. Step 2: Convert to fraction form
    764,594.96/1,055,168.17 = 420,457.28/x
  3. Step 3: Cross multiply
    764,594.96x = 1,055,168.17 × 420,457.28
  4. Step 4: Simplify right side
    764,594.96x = 443,653,132,373.79
  5. Step 5: Solve for x
    x = 443,653,132,373.79/764,594.96
  6. Step 6: Final answer
    x = 580,245.96

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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.