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Finding the Fourth Proportional to 699,198.35, 964,888.34 and 397,392.35

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Solution

The fourth proportional to 699,198.35, 964,888.34 and 397,392.35 is: 548,398.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,198.35 : 964,888.34 = 397,392.35 : x
  2. Step 2: Convert to fraction form
    699,198.35/964,888.34 = 397,392.35/x
  3. Step 3: Cross multiply
    699,198.35x = 964,888.34 × 397,392.35
  4. Step 4: Simplify right side
    699,198.35x = 383,439,238,108.80
  5. Step 5: Solve for x
    x = 383,439,238,108.80/699,198.35
  6. Step 6: Final answer
    x = 548,398.38

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Double scale
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1.5x scale

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.