Home / 777,774.80-1,166,921.40-378,664.40

Finding the Fourth Proportional to 777,774.80, 1,166,921.40 and 378,664.40

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Solution

The fourth proportional to 777,774.80, 1,166,921.40 and 378,664.40 is: 568,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,774.80 : 1,166,921.40 = 378,664.40 : x
  2. Step 2: Convert to fraction form
    777,774.80/1,166,921.40 = 378,664.40/x
  3. Step 3: Cross multiply
    777,774.80x = 1,166,921.40 × 378,664.40
  4. Step 4: Simplify right side
    777,774.80x = 441,871,591,778.16
  5. Step 5: Solve for x
    x = 441,871,591,778.16/777,774.80
  6. Step 6: Final answer
    x = 568,122.79

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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.