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Finding the Fourth Proportional to 674,339,920.20, 930,596,007.60 and 376,998,680.70

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Solution

The fourth proportional to 674,339,920.20, 930,596,007.60 and 376,998,680.70 is: 520,262,046.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,339,920.20 : 930,596,007.60 = 376,998,680.70 : x
  2. Step 2: Convert to fraction form
    674,339,920.20/930,596,007.60 = 376,998,680.70/x
  3. Step 3: Cross multiply
    674,339,920.20x = 930,596,007.60 × 376,998,680.70
  4. Step 4: Simplify right side
    674,339,920.20x = 350,833,467,129,887,168
  5. Step 5: Solve for x
    x = 350,833,467,129,887,168/674,339,920.20
  6. Step 6: Final answer
    x = 520,262,046.81

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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.