Home / 764,544.48-1,055,098.44-420,406.53

Finding the Fourth Proportional to 764,544.48, 1,055,098.44 and 420,406.53

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Solution

The fourth proportional to 764,544.48, 1,055,098.44 and 420,406.53 is: 580,175.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,544.48 : 1,055,098.44 = 420,406.53 : x
  2. Step 2: Convert to fraction form
    764,544.48/1,055,098.44 = 420,406.53/x
  3. Step 3: Cross multiply
    764,544.48x = 1,055,098.44 × 420,406.53
  4. Step 4: Simplify right side
    764,544.48x = 443,570,273,968.81
  5. Step 5: Solve for x
    x = 443,570,273,968.81/764,544.48
  6. Step 6: Final answer
    x = 580,175.89

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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.