Home / 764,538.48-1,055,090.16-420,400.53

Finding the Fourth Proportional to 764,538.48, 1,055,090.16 and 420,400.53

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Solution

The fourth proportional to 764,538.48, 1,055,090.16 and 420,400.53 is: 580,167.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,538.48 : 1,055,090.16 = 420,400.53 : x
  2. Step 2: Convert to fraction form
    764,538.48/1,055,090.16 = 420,400.53/x
  3. Step 3: Cross multiply
    764,538.48x = 1,055,090.16 × 420,400.53
  4. Step 4: Simplify right side
    764,538.48x = 443,560,462,461.79
  5. Step 5: Solve for x
    x = 443,560,462,461.79/764,538.48
  6. Step 6: Final answer
    x = 580,167.61

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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.