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Finding the Fourth Proportional to 404,694.72, 606,544.80 and 286,399.68

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Solution

The fourth proportional to 404,694.72, 606,544.80 and 286,399.68 is: 429,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,694.72 : 606,544.80 = 286,399.68 : x
  2. Step 2: Convert to fraction form
    404,694.72/606,544.80 = 286,399.68/x
  3. Step 3: Cross multiply
    404,694.72x = 606,544.80 × 286,399.68
  4. Step 4: Simplify right side
    404,694.72x = 173,714,236,625.66
  5. Step 5: Solve for x
    x = 173,714,236,625.66/404,694.72
  6. Step 6: Final answer
    x = 429,247.60

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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.