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Finding the Fourth Proportional to 663,855,768.30, 995,783,652.45 and 319,482,000.30

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Solution

The fourth proportional to 663,855,768.30, 995,783,652.45 and 319,482,000.30 is: 479,223,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,855,768.30 : 995,783,652.45 = 319,482,000.30 : x
  2. Step 2: Convert to fraction form
    663,855,768.30/995,783,652.45 = 319,482,000.30/x
  3. Step 3: Cross multiply
    663,855,768.30x = 995,783,652.45 × 319,482,000.30
  4. Step 4: Simplify right side
    663,855,768.30x = 318,134,953,150,766,016
  5. Step 5: Solve for x
    x = 318,134,953,150,766,016/663,855,768.30
  6. Step 6: Final answer
    x = 479,223,000.45

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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.