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Finding the Fourth Proportional to 1,344,829.62, 1,855,865.57 and 764,053.76

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Solution

The fourth proportional to 1,344,829.62, 1,855,865.57 and 764,053.76 is: 1,054,394.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344,829.62 : 1,855,865.57 = 764,053.76 : x
  2. Step 2: Convert to fraction form
    1,344,829.62/1,855,865.57 = 764,053.76/x
  3. Step 3: Cross multiply
    1,344,829.62x = 1,855,865.57 × 764,053.76
  4. Step 4: Simplify right side
    1,344,829.62x = 1,417,981,066,813.04
  5. Step 5: Solve for x
    x = 1,417,981,066,813.04/1,344,829.62
  6. Step 6: Final answer
    x = 1,054,394.58

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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.