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Finding the Fourth Proportional to 671,644.80, 1,007,467.20 and 198,329.40

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Solution

The fourth proportional to 671,644.80, 1,007,467.20 and 198,329.40 is: 297,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,644.80 : 1,007,467.20 = 198,329.40 : x
  2. Step 2: Convert to fraction form
    671,644.80/1,007,467.20 = 198,329.40/x
  3. Step 3: Cross multiply
    671,644.80x = 1,007,467.20 × 198,329.40
  4. Step 4: Simplify right side
    671,644.80x = 199,810,365,295.68
  5. Step 5: Solve for x
    x = 199,810,365,295.68/671,644.80
  6. Step 6: Final answer
    x = 297,494.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.