Home / 861,364,013.72-1,188,687,181.46-490,086,045.09

Finding the Fourth Proportional to 861,364,013.72, 1,188,687,181.46 and 490,086,045.09

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Solution

The fourth proportional to 861,364,013.72, 1,188,687,181.46 and 490,086,045.09 is: 676,321,497.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,364,013.72 : 1,188,687,181.46 = 490,086,045.09 : x
  2. Step 2: Convert to fraction form
    861,364,013.72/1,188,687,181.46 = 490,086,045.09/x
  3. Step 3: Cross multiply
    861,364,013.72x = 1,188,687,181.46 × 490,086,045.09
  4. Step 4: Simplify right side
    861,364,013.72x = 582,558,999,608,460,032
  5. Step 5: Solve for x
    x = 582,558,999,608,460,032/861,364,013.72
  6. Step 6: Final answer
    x = 676,321,497.45

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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.