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Finding the Fourth Proportional to 608,970,865.19, 840,380,604.89 and 330,512,388.71

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Solution

The fourth proportional to 608,970,865.19, 840,380,604.89 and 330,512,388.71 is: 456,107,536.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,970,865.19 : 840,380,604.89 = 330,512,388.71 : x
  2. Step 2: Convert to fraction form
    608,970,865.19/840,380,604.89 = 330,512,388.71/x
  3. Step 3: Cross multiply
    608,970,865.19x = 840,380,604.89 × 330,512,388.71
  4. Step 4: Simplify right side
    608,970,865.19x = 277,756,201,141,894,112
  5. Step 5: Solve for x
    x = 277,756,201,141,894,112/608,970,865.19
  6. Step 6: Final answer
    x = 456,107,536.54

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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.