Home / 811,379,452.77-1,216,758,929.94-442,717,357.57

Finding the Fourth Proportional to 811,379,452.77, 1,216,758,929.94 and 442,717,357.57

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Solution

The fourth proportional to 811,379,452.77, 1,216,758,929.94 and 442,717,357.57 is: 663,906,753.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,379,452.77 : 1,216,758,929.94 = 442,717,357.57 : x
  2. Step 2: Convert to fraction form
    811,379,452.77/1,216,758,929.94 = 442,717,357.57/x
  3. Step 3: Cross multiply
    811,379,452.77x = 1,216,758,929.94 × 442,717,357.57
  4. Step 4: Simplify right side
    811,379,452.77x = 538,680,298,259,695,680
  5. Step 5: Solve for x
    x = 538,680,298,259,695,680/811,379,452.77
  6. Step 6: Final answer
    x = 663,906,753.39

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Double scale
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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.