Home / 865,204,712.43-1,297,807,083.68-210,151,324.72

Finding the Fourth Proportional to 865,204,712.43, 1,297,807,083.68 and 210,151,324.72

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Solution

The fourth proportional to 865,204,712.43, 1,297,807,083.68 and 210,151,324.72 is: 315,226,990.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,204,712.43 : 1,297,807,083.68 = 210,151,324.72 : x
  2. Step 2: Convert to fraction form
    865,204,712.43/1,297,807,083.68 = 210,151,324.72/x
  3. Step 3: Cross multiply
    865,204,712.43x = 1,297,807,083.68 × 210,151,324.72
  4. Step 4: Simplify right side
    865,204,712.43x = 272,735,877,866,877,248
  5. Step 5: Solve for x
    x = 272,735,877,866,877,248/865,204,712.43
  6. Step 6: Final answer
    x = 315,226,990.73

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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.