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Finding the Fourth Proportional to 668,456.04, 922,587.27 and 396,673.80

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Solution

The fourth proportional to 668,456.04, 922,587.27 and 396,673.80 is: 547,479.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,456.04 : 922,587.27 = 396,673.80 : x
  2. Step 2: Convert to fraction form
    668,456.04/922,587.27 = 396,673.80/x
  3. Step 3: Cross multiply
    668,456.04x = 922,587.27 × 396,673.80
  4. Step 4: Simplify right side
    668,456.04x = 365,966,198,222.53
  5. Step 5: Solve for x
    x = 365,966,198,222.53/668,456.04
  6. Step 6: Final answer
    x = 547,479.83

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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.