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Finding the Fourth Proportional to 668,807.46, 922,893.21 and 396,828.54

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Solution

The fourth proportional to 668,807.46, 922,893.21 and 396,828.54 is: 547,587.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,807.46 : 922,893.21 = 396,828.54 : x
  2. Step 2: Convert to fraction form
    668,807.46/922,893.21 = 396,828.54/x
  3. Step 3: Cross multiply
    668,807.46x = 922,893.21 × 396,828.54
  4. Step 4: Simplify right side
    668,807.46x = 366,230,365,100.21
  5. Step 5: Solve for x
    x = 366,230,365,100.21/668,807.46
  6. Step 6: Final answer
    x = 547,587.14

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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.