Home / 764,338.06-1,054,799.94-420,188.50

Finding the Fourth Proportional to 764,338.06, 1,054,799.94 and 420,188.50

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Solution

The fourth proportional to 764,338.06, 1,054,799.94 and 420,188.50 is: 579,867.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,338.06 : 1,054,799.94 = 420,188.50 : x
  2. Step 2: Convert to fraction form
    764,338.06/1,054,799.94 = 420,188.50/x
  3. Step 3: Cross multiply
    764,338.06x = 1,054,799.94 × 420,188.50
  4. Step 4: Simplify right side
    764,338.06x = 443,214,804,588.69
  5. Step 5: Solve for x
    x = 443,214,804,588.69/764,338.06
  6. Step 6: Final answer
    x = 579,867.51

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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.