Home / 769,798.80-1,062,288.90-420,932.79

Finding the Fourth Proportional to 769,798.80, 1,062,288.90 and 420,932.79

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Solution

The fourth proportional to 769,798.80, 1,062,288.90 and 420,932.79 is: 580,868.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,798.80 : 1,062,288.90 = 420,932.79 : x
  2. Step 2: Convert to fraction form
    769,798.80/1,062,288.90 = 420,932.79/x
  3. Step 3: Cross multiply
    769,798.80x = 1,062,288.90 × 420,932.79
  4. Step 4: Simplify right side
    769,798.80x = 447,152,230,463.03
  5. Step 5: Solve for x
    x = 447,152,230,463.03/769,798.80
  6. Step 6: Final answer
    x = 580,868.96

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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.