Home / 764,577.84-1,055,140.38-420,395.97

Finding the Fourth Proportional to 764,577.84, 1,055,140.38 and 420,395.97

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Solution

The fourth proportional to 764,577.84, 1,055,140.38 and 420,395.97 is: 580,159.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,577.84 : 1,055,140.38 = 420,395.97 : x
  2. Step 2: Convert to fraction form
    764,577.84/1,055,140.38 = 420,395.97/x
  3. Step 3: Cross multiply
    764,577.84x = 1,055,140.38 × 420,395.97
  4. Step 4: Simplify right side
    764,577.84x = 443,576,763,536.27
  5. Step 5: Solve for x
    x = 443,576,763,536.27/764,577.84
  6. Step 6: Final answer
    x = 580,159.06

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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.