Home / 764,703.98-1,055,267.34-420,538.85

Finding the Fourth Proportional to 764,703.98, 1,055,267.34 and 420,538.85

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Solution

The fourth proportional to 764,703.98, 1,055,267.34 and 420,538.85 is: 580,330.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,703.98 : 1,055,267.34 = 420,538.85 : x
  2. Step 2: Convert to fraction form
    764,703.98/1,055,267.34 = 420,538.85/x
  3. Step 3: Cross multiply
    764,703.98x = 1,055,267.34 × 420,538.85
  4. Step 4: Simplify right side
    764,703.98x = 443,780,907,140.97
  5. Step 5: Solve for x
    x = 443,780,907,140.97/764,703.98
  6. Step 6: Final answer
    x = 580,330.32

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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.