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Finding the Fourth Proportional to 662,684.20, 994,026.30 and 213,404.20

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Solution

The fourth proportional to 662,684.20, 994,026.30 and 213,404.20 is: 320,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,684.20 : 994,026.30 = 213,404.20 : x
  2. Step 2: Convert to fraction form
    662,684.20/994,026.30 = 213,404.20/x
  3. Step 3: Cross multiply
    662,684.20x = 994,026.30 × 213,404.20
  4. Step 4: Simplify right side
    662,684.20x = 212,129,387,330.46
  5. Step 5: Solve for x
    x = 212,129,387,330.46/662,684.20
  6. Step 6: Final answer
    x = 320,106.30

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Double scale
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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.