Home / 764,443.01-1,054,932.01-420,284.78

Finding the Fourth Proportional to 764,443.01, 1,054,932.01 and 420,284.78

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Solution

The fourth proportional to 764,443.01, 1,054,932.01 and 420,284.78 is: 579,993.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,443.01 : 1,054,932.01 = 420,284.78 : x
  2. Step 2: Convert to fraction form
    764,443.01/1,054,932.01 = 420,284.78/x
  3. Step 3: Cross multiply
    764,443.01x = 1,054,932.01 × 420,284.78
  4. Step 4: Simplify right side
    764,443.01x = 443,371,861,412.44
  5. Step 5: Solve for x
    x = 443,371,861,412.44/764,443.01
  6. Step 6: Final answer
    x = 579,993.35

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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.