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Finding the Fourth Proportional to 656,873.38, 906,484.86 and 355,067.38

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Solution

The fourth proportional to 656,873.38, 906,484.86 and 355,067.38 is: 489,992.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,873.38 : 906,484.86 = 355,067.38 : x
  2. Step 2: Convert to fraction form
    656,873.38/906,484.86 = 355,067.38/x
  3. Step 3: Cross multiply
    656,873.38x = 906,484.86 × 355,067.38
  4. Step 4: Simplify right side
    656,873.38x = 321,863,201,983.66
  5. Step 5: Solve for x
    x = 321,863,201,983.66/656,873.38
  6. Step 6: Final answer
    x = 489,992.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.