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Finding the Fourth Proportional to 888,684,688.82, 1,227,209,234.42 and 665,278,516.33

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Solution

The fourth proportional to 888,684,688.82, 1,227,209,234.42 and 665,278,516.33 is: 918,701,479.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,684,688.82 : 1,227,209,234.42 = 665,278,516.33 : x
  2. Step 2: Convert to fraction form
    888,684,688.82/1,227,209,234.42 = 665,278,516.33/x
  3. Step 3: Cross multiply
    888,684,688.82x = 1,227,209,234.42 × 665,278,516.33
  4. Step 4: Simplify right side
    888,684,688.82x = 816,435,938,701,412,864
  5. Step 5: Solve for x
    x = 816,435,938,701,412,864/888,684,688.82
  6. Step 6: Final answer
    x = 918,701,479.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.