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Finding the Fourth Proportional to 663,564,326.98, 915,716,874.33 and 366,204,410.50

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Solution

The fourth proportional to 663,564,326.98, 915,716,874.33 and 366,204,410.50 is: 505,361,039.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,564,326.98 : 915,716,874.33 = 366,204,410.50 : x
  2. Step 2: Convert to fraction form
    663,564,326.98/915,716,874.33 = 366,204,410.50/x
  3. Step 3: Cross multiply
    663,564,326.98x = 915,716,874.33 × 366,204,410.50
  4. Step 4: Simplify right side
    663,564,326.98x = 335,339,558,148,920,256
  5. Step 5: Solve for x
    x = 335,339,558,148,920,256/663,564,326.98
  6. Step 6: Final answer
    x = 505,361,039.64

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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.