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Finding the Fourth Proportional to 1,398,335.82, 1,929,716.91 and 794,728.14

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Solution

The fourth proportional to 1,398,335.82, 1,929,716.91 and 794,728.14 is: 1,096,732.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,335.82 : 1,929,716.91 = 794,728.14 : x
  2. Step 2: Convert to fraction form
    1,398,335.82/1,929,716.91 = 794,728.14/x
  3. Step 3: Cross multiply
    1,398,335.82x = 1,929,716.91 × 794,728.14
  4. Step 4: Simplify right side
    1,398,335.82x = 1,533,600,330,610.85
  5. Step 5: Solve for x
    x = 1,533,600,330,610.85/1,398,335.82
  6. Step 6: Final answer
    x = 1,096,732.49

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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.