Home / 645,193,958.40-967,790,937.60-214,372,454.40

Finding the Fourth Proportional to 645,193,958.40, 967,790,937.60 and 214,372,454.40

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Solution

The fourth proportional to 645,193,958.40, 967,790,937.60 and 214,372,454.40 is: 321,558,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,193,958.40 : 967,790,937.60 = 214,372,454.40 : x
  2. Step 2: Convert to fraction form
    645,193,958.40/967,790,937.60 = 214,372,454.40/x
  3. Step 3: Cross multiply
    645,193,958.40x = 967,790,937.60 × 214,372,454.40
  4. Step 4: Simplify right side
    645,193,958.40x = 207,467,718,639,389,248
  5. Step 5: Solve for x
    x = 207,467,718,639,389,248/645,193,958.40
  6. Step 6: Final answer
    x = 321,558,681.60

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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.