Home / 764,155.87-1,054,546.00-420,023.61

Finding the Fourth Proportional to 764,155.87, 1,054,546.00 and 420,023.61

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Solution

The fourth proportional to 764,155.87, 1,054,546.00 and 420,023.61 is: 579,638.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,155.87 : 1,054,546.00 = 420,023.61 : x
  2. Step 2: Convert to fraction form
    764,155.87/1,054,546.00 = 420,023.61/x
  3. Step 3: Cross multiply
    764,155.87x = 1,054,546.00 × 420,023.61
  4. Step 4: Simplify right side
    764,155.87x = 442,934,216,781.00
  5. Step 5: Solve for x
    x = 442,934,216,781.00/764,155.87
  6. Step 6: Final answer
    x = 579,638.57

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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.