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Finding the Fourth Proportional to 667,633.41, 921,332.86 and 361,717.40

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Solution

The fourth proportional to 667,633.41, 921,332.86 and 361,717.40 is: 499,169.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,633.41 : 921,332.86 = 361,717.40 : x
  2. Step 2: Convert to fraction form
    667,633.41/921,332.86 = 361,717.40/x
  3. Step 3: Cross multiply
    667,633.41x = 921,332.86 × 361,717.40
  4. Step 4: Simplify right side
    667,633.41x = 333,262,124,904.97
  5. Step 5: Solve for x
    x = 333,262,124,904.97/667,633.41
  6. Step 6: Final answer
    x = 499,169.33

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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.