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Finding the Fourth Proportional to 668,453.54, 922,583.82 and 396,671.29

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Solution

The fourth proportional to 668,453.54, 922,583.82 and 396,671.29 is: 547,476.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,453.54 : 922,583.82 = 396,671.29 : x
  2. Step 2: Convert to fraction form
    668,453.54/922,583.82 = 396,671.29/x
  3. Step 3: Cross multiply
    668,453.54x = 922,583.82 × 396,671.29
  4. Step 4: Simplify right side
    668,453.54x = 365,962,514,012.53
  5. Step 5: Solve for x
    x = 365,962,514,012.53/668,453.54
  6. Step 6: Final answer
    x = 547,476.36

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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.