Home / 826,685,999.70-1,240,028,999.55-309,049,179.68

Finding the Fourth Proportional to 826,685,999.70, 1,240,028,999.55 and 309,049,179.68

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Solution

The fourth proportional to 826,685,999.70, 1,240,028,999.55 and 309,049,179.68 is: 463,573,769.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,685,999.70 : 1,240,028,999.55 = 309,049,179.68 : x
  2. Step 2: Convert to fraction form
    826,685,999.70/1,240,028,999.55 = 309,049,179.68/x
  3. Step 3: Cross multiply
    826,685,999.70x = 1,240,028,999.55 × 309,049,179.68
  4. Step 4: Simplify right side
    826,685,999.70x = 383,229,945,084,138,432
  5. Step 5: Solve for x
    x = 383,229,945,084,138,432/826,685,999.70
  6. Step 6: Final answer
    x = 463,573,769.51

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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.