Home / 777,784.80-1,166,936.40-378,674.40

Finding the Fourth Proportional to 777,784.80, 1,166,936.40 and 378,674.40

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Solution

The fourth proportional to 777,784.80, 1,166,936.40 and 378,674.40 is: 568,137.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,784.80 : 1,166,936.40 = 378,674.40 : x
  2. Step 2: Convert to fraction form
    777,784.80/1,166,936.40 = 378,674.40/x
  3. Step 3: Cross multiply
    777,784.80x = 1,166,936.40 × 378,674.40
  4. Step 4: Simplify right side
    777,784.80x = 441,888,941,108.16
  5. Step 5: Solve for x
    x = 441,888,941,108.16/777,784.80
  6. Step 6: Final answer
    x = 568,137.79

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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.