Home / 764,564.55-1,055,006.82-420,343.71

Finding the Fourth Proportional to 764,564.55, 1,055,006.82 and 420,343.71

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Solution

The fourth proportional to 764,564.55, 1,055,006.82 and 420,343.71 is: 580,023.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,564.55 : 1,055,006.82 = 420,343.71 : x
  2. Step 2: Convert to fraction form
    764,564.55/1,055,006.82 = 420,343.71/x
  3. Step 3: Cross multiply
    764,564.55x = 1,055,006.82 × 420,343.71
  4. Step 4: Simplify right side
    764,564.55x = 443,465,480,794.10
  5. Step 5: Solve for x
    x = 443,465,480,794.10/764,564.55
  6. Step 6: Final answer
    x = 580,023.60

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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.