Home / 764,614.95-1,055,235.85-420,511.50

Finding the Fourth Proportional to 764,614.95, 1,055,235.85 and 420,511.50

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Solution

The fourth proportional to 764,614.95, 1,055,235.85 and 420,511.50 is: 580,342.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,614.95 : 1,055,235.85 = 420,511.50 : x
  2. Step 2: Convert to fraction form
    764,614.95/1,055,235.85 = 420,511.50/x
  3. Step 3: Cross multiply
    764,614.95x = 1,055,235.85 × 420,511.50
  4. Step 4: Simplify right side
    764,614.95x = 443,738,810,137.28
  5. Step 5: Solve for x
    x = 443,738,810,137.28/764,614.95
  6. Step 6: Final answer
    x = 580,342.84

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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.