Home / 792,139.20-1,188,208.80-764,145.60

Finding the Fourth Proportional to 792,139.20, 1,188,208.80 and 764,145.60

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Solution

The fourth proportional to 792,139.20, 1,188,208.80 and 764,145.60 is: 1,146,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,139.20 : 1,188,208.80 = 764,145.60 : x
  2. Step 2: Convert to fraction form
    792,139.20/1,188,208.80 = 764,145.60/x
  3. Step 3: Cross multiply
    792,139.20x = 1,188,208.80 × 764,145.60
  4. Step 4: Simplify right side
    792,139.20x = 907,964,526,401.28
  5. Step 5: Solve for x
    x = 907,964,526,401.28/792,139.20
  6. Step 6: Final answer
    x = 1,146,218.40

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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.