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Finding the Fourth Proportional to 404,299.80, 606,449.70 and 278,328.60

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Solution

The fourth proportional to 404,299.80, 606,449.70 and 278,328.60 is: 417,492.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,299.80 : 606,449.70 = 278,328.60 : x
  2. Step 2: Convert to fraction form
    404,299.80/606,449.70 = 278,328.60/x
  3. Step 3: Cross multiply
    404,299.80x = 606,449.70 × 278,328.60
  4. Step 4: Simplify right side
    404,299.80x = 168,792,295,971.42
  5. Step 5: Solve for x
    x = 168,792,295,971.42/404,299.80
  6. Step 6: Final answer
    x = 417,492.90

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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.