Home / 820,399,917.01-1,132,151,940.71-449,121,948.39

Finding the Fourth Proportional to 820,399,917.01, 1,132,151,940.71 and 449,121,948.39

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Solution

The fourth proportional to 820,399,917.01, 1,132,151,940.71 and 449,121,948.39 is: 619,788,319.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,399,917.01 : 1,132,151,940.71 = 449,121,948.39 : x
  2. Step 2: Convert to fraction form
    820,399,917.01/1,132,151,940.71 = 449,121,948.39/x
  3. Step 3: Cross multiply
    820,399,917.01x = 1,132,151,940.71 × 449,121,948.39
  4. Step 4: Simplify right side
    820,399,917.01x = 508,474,285,485,194,944
  5. Step 5: Solve for x
    x = 508,474,285,485,194,944/820,399,917.01
  6. Step 6: Final answer
    x = 619,788,319.02

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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.