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Finding the Fourth Proportional to 764,600.80, 1,145,518.80 and 654,008.80

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Solution

The fourth proportional to 764,600.80, 1,145,518.80 and 654,008.80 is: 979,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,600.80 : 1,145,518.80 = 654,008.80 : x
  2. Step 2: Convert to fraction form
    764,600.80/1,145,518.80 = 654,008.80/x
  3. Step 3: Cross multiply
    764,600.80x = 1,145,518.80 × 654,008.80
  4. Step 4: Simplify right side
    764,600.80x = 749,179,375,765.44
  5. Step 5: Solve for x
    x = 749,179,375,765.44/764,600.80
  6. Step 6: Final answer
    x = 979,830.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.