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Finding the Fourth Proportional to 689,951,610.72, 952,118,673.12 and 376,670,684.16

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Solution

The fourth proportional to 689,951,610.72, 952,118,673.12 and 376,670,684.16 is: 519,797,600.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,951,610.72 : 952,118,673.12 = 376,670,684.16 : x
  2. Step 2: Convert to fraction form
    689,951,610.72/952,118,673.12 = 376,670,684.16/x
  3. Step 3: Cross multiply
    689,951,610.72x = 952,118,673.12 × 376,670,684.16
  4. Step 4: Simplify right side
    689,951,610.72x = 358,635,192,005,621,824
  5. Step 5: Solve for x
    x = 358,635,192,005,621,824/689,951,610.72
  6. Step 6: Final answer
    x = 519,797,600.92

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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.