Home / 769,309.84-1,061,650.81-420,457.27

Finding the Fourth Proportional to 769,309.84, 1,061,650.81 and 420,457.27

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Solution

The fourth proportional to 769,309.84, 1,061,650.81 and 420,457.27 is: 580,232.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,309.84 : 1,061,650.81 = 420,457.27 : x
  2. Step 2: Convert to fraction form
    769,309.84/1,061,650.81 = 420,457.27/x
  3. Step 3: Cross multiply
    769,309.84x = 1,061,650.81 × 420,457.27
  4. Step 4: Simplify right side
    769,309.84x = 446,378,801,265.89
  5. Step 5: Solve for x
    x = 446,378,801,265.89/769,309.84
  6. Step 6: Final answer
    x = 580,232.80

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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.