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Finding the Fourth Proportional to 404,604.60, 606,906.90 and 278,633.40

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Solution

The fourth proportional to 404,604.60, 606,906.90 and 278,633.40 is: 417,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,604.60 : 606,906.90 = 278,633.40 : x
  2. Step 2: Convert to fraction form
    404,604.60/606,906.90 = 278,633.40/x
  3. Step 3: Cross multiply
    404,604.60x = 606,906.90 × 278,633.40
  4. Step 4: Simplify right side
    404,604.60x = 169,104,533,030.46
  5. Step 5: Solve for x
    x = 169,104,533,030.46/404,604.60
  6. Step 6: Final answer
    x = 417,950.10

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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.