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Finding the Fourth Proportional to 561,847,039.11, 775,343,203.25 and 310,951,918.89

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Solution

The fourth proportional to 561,847,039.11, 775,343,203.25 and 310,951,918.89 is: 429,110,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,847,039.11 : 775,343,203.25 = 310,951,918.89 : x
  2. Step 2: Convert to fraction form
    561,847,039.11/775,343,203.25 = 310,951,918.89/x
  3. Step 3: Cross multiply
    561,847,039.11x = 775,343,203.25 × 310,951,918.89
  4. Step 4: Simplify right side
    561,847,039.11x = 241,094,456,847,352,000
  5. Step 5: Solve for x
    x = 241,094,456,847,352,000/561,847,039.11
  6. Step 6: Final answer
    x = 429,110,487.49

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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.