Home / 769,574.66-1,061,997.28-420,709.88

Finding the Fourth Proportional to 769,574.66, 1,061,997.28 and 420,709.88

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Solution

The fourth proportional to 769,574.66, 1,061,997.28 and 420,709.88 is: 580,571.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,574.66 : 1,061,997.28 = 420,709.88 : x
  2. Step 2: Convert to fraction form
    769,574.66/1,061,997.28 = 420,709.88/x
  3. Step 3: Cross multiply
    769,574.66x = 1,061,997.28 × 420,709.88
  4. Step 4: Simplify right side
    769,574.66x = 446,792,749,832.35
  5. Step 5: Solve for x
    x = 446,792,749,832.35/769,574.66
  6. Step 6: Final answer
    x = 580,571.03

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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.