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Finding the Fourth Proportional to 1,333,329.46, 1,839,981.18 and 721,468.78

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Solution

The fourth proportional to 1,333,329.46, 1,839,981.18 and 721,468.78 is: 995,619.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333,329.46 : 1,839,981.18 = 721,468.78 : x
  2. Step 2: Convert to fraction form
    1,333,329.46/1,839,981.18 = 721,468.78/x
  3. Step 3: Cross multiply
    1,333,329.46x = 1,839,981.18 × 721,468.78
  4. Step 4: Simplify right side
    1,333,329.46x = 1,327,488,977,157.56
  5. Step 5: Solve for x
    x = 1,327,488,977,157.56/1,333,329.46
  6. Step 6: Final answer
    x = 995,619.63

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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.