Home / 442,570,512.20-663,855,768.30-212,988,000.20

Finding the Fourth Proportional to 442,570,512.20, 663,855,768.30 and 212,988,000.20

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Solution

The fourth proportional to 442,570,512.20, 663,855,768.30 and 212,988,000.20 is: 319,482,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,570,512.20 : 663,855,768.30 = 212,988,000.20 : x
  2. Step 2: Convert to fraction form
    442,570,512.20/663,855,768.30 = 212,988,000.20/x
  3. Step 3: Cross multiply
    442,570,512.20x = 663,855,768.30 × 212,988,000.20
  4. Step 4: Simplify right side
    442,570,512.20x = 141,393,312,511,451,536
  5. Step 5: Solve for x
    x = 141,393,312,511,451,536/442,570,512.20
  6. Step 6: Final answer
    x = 319,482,000.30

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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.