Home / 494,355.15-682,109.51-290,439.27

Finding the Fourth Proportional to 494,355.15, 682,109.51 and 290,439.27

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Solution

The fourth proportional to 494,355.15, 682,109.51 and 290,439.27 is: 400,747.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,355.15 : 682,109.51 = 290,439.27 : x
  2. Step 2: Convert to fraction form
    494,355.15/682,109.51 = 290,439.27/x
  3. Step 3: Cross multiply
    494,355.15x = 682,109.51 × 290,439.27
  4. Step 4: Simplify right side
    494,355.15x = 198,111,386,692.26
  5. Step 5: Solve for x
    x = 198,111,386,692.26/494,355.15
  6. Step 6: Final answer
    x = 400,747.09

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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.