Home / 764,700.57-1,055,265.74-420,536.51

Finding the Fourth Proportional to 764,700.57, 1,055,265.74 and 420,536.51

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Solution

The fourth proportional to 764,700.57, 1,055,265.74 and 420,536.51 is: 580,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,700.57 : 1,055,265.74 = 420,536.51 : x
  2. Step 2: Convert to fraction form
    764,700.57/1,055,265.74 = 420,536.51/x
  3. Step 3: Cross multiply
    764,700.57x = 1,055,265.74 × 420,536.51
  4. Step 4: Simplify right side
    764,700.57x = 443,777,764,043.16
  5. Step 5: Solve for x
    x = 443,777,764,043.16/764,700.57
  6. Step 6: Final answer
    x = 580,328.80

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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.