Home / 485,778.57-670,383.05-270,895.56

Finding the Fourth Proportional to 485,778.57, 670,383.05 and 270,895.56

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Solution

The fourth proportional to 485,778.57, 670,383.05 and 270,895.56 is: 373,840.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,778.57 : 670,383.05 = 270,895.56 : x
  2. Step 2: Convert to fraction form
    485,778.57/670,383.05 = 270,895.56/x
  3. Step 3: Cross multiply
    485,778.57x = 670,383.05 × 270,895.56
  4. Step 4: Simplify right side
    485,778.57x = 181,603,790,389.78
  5. Step 5: Solve for x
    x = 181,603,790,389.78/485,778.57
  6. Step 6: Final answer
    x = 373,840.68

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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.