Home / 1,333,257.79-1,839,890.66-721,411.74

Finding the Fourth Proportional to 1,333,257.79, 1,839,890.66 and 721,411.74

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Solution

The fourth proportional to 1,333,257.79, 1,839,890.66 and 721,411.74 is: 995,545.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333,257.79 : 1,839,890.66 = 721,411.74 : x
  2. Step 2: Convert to fraction form
    1,333,257.79/1,839,890.66 = 721,411.74/x
  3. Step 3: Cross multiply
    1,333,257.79x = 1,839,890.66 × 721,411.74
  4. Step 4: Simplify right side
    1,333,257.79x = 1,327,318,713,240.90
  5. Step 5: Solve for x
    x = 1,327,318,713,240.90/1,333,257.79
  6. Step 6: Final answer
    x = 995,545.44

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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.