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Finding the Fourth Proportional to 699,202.10, 964,893.51 and 397,396.10

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Solution

The fourth proportional to 699,202.10, 964,893.51 and 397,396.10 is: 548,403.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,202.10 : 964,893.51 = 397,396.10 : x
  2. Step 2: Convert to fraction form
    699,202.10/964,893.51 = 397,396.10/x
  3. Step 3: Cross multiply
    699,202.10x = 964,893.51 × 397,396.10
  4. Step 4: Simplify right side
    699,202.10x = 383,444,912,964.84
  5. Step 5: Solve for x
    x = 383,444,912,964.84/699,202.10
  6. Step 6: Final answer
    x = 548,403.55

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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.