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Finding the Fourth Proportional to 654,399.90, 980,433.45 and 404,790.30

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Solution

The fourth proportional to 654,399.90, 980,433.45 and 404,790.30 is: 606,463.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,399.90 : 980,433.45 = 404,790.30 : x
  2. Step 2: Convert to fraction form
    654,399.90/980,433.45 = 404,790.30/x
  3. Step 3: Cross multiply
    654,399.90x = 980,433.45 × 404,790.30
  4. Step 4: Simplify right side
    654,399.90x = 396,869,950,355.54
  5. Step 5: Solve for x
    x = 396,869,950,355.54/654,399.90
  6. Step 6: Final answer
    x = 606,463.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.