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Finding the Fourth Proportional to 1,281,751, 1,768,787.22 and 708,795.88

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Solution

The fourth proportional to 1,281,751, 1,768,787.22 and 708,795.88 is: 978,122.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,751 : 1,768,787.22 = 708,795.88 : x
  2. Step 2: Convert to fraction form
    1,281,751/1,768,787.22 = 708,795.88/x
  3. Step 3: Cross multiply
    1,281,751x = 1,768,787.22 × 708,795.88
  4. Step 4: Simplify right side
    1,281,751x = 1,253,709,094,132.65
  5. Step 5: Solve for x
    x = 1,253,709,094,132.65/1,281,751
  6. Step 6: Final answer
    x = 978,122.19

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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.