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Finding the Fourth Proportional to 698,793.48, 964,335.78 and 397,045.80

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Solution

The fourth proportional to 698,793.48, 964,335.78 and 397,045.80 is: 547,923.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,793.48 : 964,335.78 = 397,045.80 : x
  2. Step 2: Convert to fraction form
    698,793.48/964,335.78 = 397,045.80/x
  3. Step 3: Cross multiply
    698,793.48x = 964,335.78 × 397,045.80
  4. Step 4: Simplify right side
    698,793.48x = 382,885,471,238.72
  5. Step 5: Solve for x
    x = 382,885,471,238.72/698,793.48
  6. Step 6: Final answer
    x = 547,923.65

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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.