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Finding the Fourth Proportional to 1,247,698.32, 1,721,843.34 and 703,844.73

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Solution

The fourth proportional to 1,247,698.32, 1,721,843.34 and 703,844.73 is: 971,316.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,698.32 : 1,721,843.34 = 703,844.73 : x
  2. Step 2: Convert to fraction form
    1,247,698.32/1,721,843.34 = 703,844.73/x
  3. Step 3: Cross multiply
    1,247,698.32x = 1,721,843.34 × 703,844.73
  4. Step 4: Simplify right side
    1,247,698.32x = 1,211,910,360,744.60
  5. Step 5: Solve for x
    x = 1,211,910,360,744.60/1,247,698.32
  6. Step 6: Final answer
    x = 971,316.82

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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.