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Finding the Fourth Proportional to 668,456.02, 922,587.24 and 396,673.78

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Solution

The fourth proportional to 668,456.02, 922,587.24 and 396,673.78 is: 547,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,456.02 : 922,587.24 = 396,673.78 : x
  2. Step 2: Convert to fraction form
    668,456.02/922,587.24 = 396,673.78/x
  3. Step 3: Cross multiply
    668,456.02x = 922,587.24 × 396,673.78
  4. Step 4: Simplify right side
    668,456.02x = 365,966,167,870.57
  5. Step 5: Solve for x
    x = 365,966,167,870.57/668,456.02
  6. Step 6: Final answer
    x = 547,479.80

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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.