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Finding the Fourth Proportional to 709,666,890.88, 978,973,481.28 and 449,057,672.32

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Solution

The fourth proportional to 709,666,890.88, 978,973,481.28 and 449,057,672.32 is: 619,467,469.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,666,890.88 : 978,973,481.28 = 449,057,672.32 : x
  2. Step 2: Convert to fraction form
    709,666,890.88/978,973,481.28 = 449,057,672.32/x
  3. Step 3: Cross multiply
    709,666,890.88x = 978,973,481.28 × 449,057,672.32
  4. Step 4: Simplify right side
    709,666,890.88x = 439,615,552,766,603,904
  5. Step 5: Solve for x
    x = 439,615,552,766,603,904/709,666,890.88
  6. Step 6: Final answer
    x = 619,467,469.06

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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.