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Finding the Fourth Proportional to 668,568.78, 922,691.19 and 382,129.98

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Solution

The fourth proportional to 668,568.78, 922,691.19 and 382,129.98 is: 527,377.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,568.78 : 922,691.19 = 382,129.98 : x
  2. Step 2: Convert to fraction form
    668,568.78/922,691.19 = 382,129.98/x
  3. Step 3: Cross multiply
    668,568.78x = 922,691.19 × 382,129.98
  4. Step 4: Simplify right side
    668,568.78x = 352,587,965,980.88
  5. Step 5: Solve for x
    x = 352,587,965,980.88/668,568.78
  6. Step 6: Final answer
    x = 527,377.25

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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.