Home / 645,327,220.20-967,990,830.30-214,505,716.20

Finding the Fourth Proportional to 645,327,220.20, 967,990,830.30 and 214,505,716.20

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Solution

The fourth proportional to 645,327,220.20, 967,990,830.30 and 214,505,716.20 is: 321,758,574.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,327,220.20 : 967,990,830.30 = 214,505,716.20 : x
  2. Step 2: Convert to fraction form
    645,327,220.20/967,990,830.30 = 214,505,716.20/x
  3. Step 3: Cross multiply
    645,327,220.20x = 967,990,830.30 × 214,505,716.20
  4. Step 4: Simplify right side
    645,327,220.20x = 207,639,566,328,534,144
  5. Step 5: Solve for x
    x = 207,639,566,328,534,144/645,327,220.20
  6. Step 6: Final answer
    x = 321,758,574.30

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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.