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Finding the Fourth Proportional to 864,067.60, 1,295,712.60 and 331,411.60

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Solution

The fourth proportional to 864,067.60, 1,295,712.60 and 331,411.60 is: 496,968.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,067.60 : 1,295,712.60 = 331,411.60 : x
  2. Step 2: Convert to fraction form
    864,067.60/1,295,712.60 = 331,411.60/x
  3. Step 3: Cross multiply
    864,067.60x = 1,295,712.60 × 331,411.60
  4. Step 4: Simplify right side
    864,067.60x = 429,414,185,906.16
  5. Step 5: Solve for x
    x = 429,414,185,906.16/864,067.60
  6. Step 6: Final answer
    x = 496,968.28

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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.