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Finding the Fourth Proportional to 1,721,212.65, 2,375,260.31 and 946,826.82

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Solution

The fourth proportional to 1,721,212.65, 2,375,260.31 and 946,826.82 is: 1,306,613.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721,212.65 : 2,375,260.31 = 946,826.82 : x
  2. Step 2: Convert to fraction form
    1,721,212.65/2,375,260.31 = 946,826.82/x
  3. Step 3: Cross multiply
    1,721,212.65x = 2,375,260.31 × 946,826.82
  4. Step 4: Simplify right side
    1,721,212.65x = 2,248,960,168,356.58
  5. Step 5: Solve for x
    x = 2,248,960,168,356.58/1,721,212.65
  6. Step 6: Final answer
    x = 1,306,613.78

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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.