Home / 820,399,914.01-1,132,151,936.57-449,121,945.39

Finding the Fourth Proportional to 820,399,914.01, 1,132,151,936.57 and 449,121,945.39

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Solution

The fourth proportional to 820,399,914.01, 1,132,151,936.57 and 449,121,945.39 is: 619,788,314.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,399,914.01 : 1,132,151,936.57 = 449,121,945.39 : x
  2. Step 2: Convert to fraction form
    820,399,914.01/1,132,151,936.57 = 449,121,945.39/x
  3. Step 3: Cross multiply
    820,399,914.01x = 1,132,151,936.57 × 449,121,945.39
  4. Step 4: Simplify right side
    820,399,914.01x = 508,474,280,229,374,208
  5. Step 5: Solve for x
    x = 508,474,280,229,374,208/820,399,914.01
  6. Step 6: Final answer
    x = 619,788,314.88

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1.5x scale

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.