Home / 764,153.28-1,054,528.56-420,012

Finding the Fourth Proportional to 764,153.28, 1,054,528.56 and 420,012

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Solution

The fourth proportional to 764,153.28, 1,054,528.56 and 420,012 is: 579,614.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,153.28 : 1,054,528.56 = 420,012 : x
  2. Step 2: Convert to fraction form
    764,153.28/1,054,528.56 = 420,012/x
  3. Step 3: Cross multiply
    764,153.28x = 1,054,528.56 × 420,012
  4. Step 4: Simplify right side
    764,153.28x = 442,914,649,542.72
  5. Step 5: Solve for x
    x = 442,914,649,542.72/764,153.28
  6. Step 6: Final answer
    x = 579,614.93

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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.