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Finding the Fourth Proportional to 1,672,867.96, 2,308,578.78 and 908,934.28

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Solution

The fourth proportional to 1,672,867.96, 2,308,578.78 and 908,934.28 is: 1,254,340.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672,867.96 : 2,308,578.78 = 908,934.28 : x
  2. Step 2: Convert to fraction form
    1,672,867.96/2,308,578.78 = 908,934.28/x
  3. Step 3: Cross multiply
    1,672,867.96x = 2,308,578.78 × 908,934.28
  4. Step 4: Simplify right side
    1,672,867.96x = 2,098,346,391,222.58
  5. Step 5: Solve for x
    x = 2,098,346,391,222.58/1,672,867.96
  6. Step 6: Final answer
    x = 1,254,340.71

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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.