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Finding the Fourth Proportional to 668,860.26, 922,966.14 and 396,881.29

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Solution

The fourth proportional to 668,860.26, 922,966.14 and 396,881.29 is: 547,659.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,860.26 : 922,966.14 = 396,881.29 : x
  2. Step 2: Convert to fraction form
    668,860.26/922,966.14 = 396,881.29/x
  3. Step 3: Cross multiply
    668,860.26x = 922,966.14 × 396,881.29
  4. Step 4: Simplify right side
    668,860.26x = 366,307,992,269.52
  5. Step 5: Solve for x
    x = 366,307,992,269.52/668,860.26
  6. Step 6: Final answer
    x = 547,659.97

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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.