Home / 729,014,729.22-1,006,042,992.48-394,487,254.89

Finding the Fourth Proportional to 729,014,729.22, 1,006,042,992.48 and 394,487,254.89

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Solution

The fourth proportional to 729,014,729.22, 1,006,042,992.48 and 394,487,254.89 is: 544,393,854.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,014,729.22 : 1,006,042,992.48 = 394,487,254.89 : x
  2. Step 2: Convert to fraction form
    729,014,729.22/1,006,042,992.48 = 394,487,254.89/x
  3. Step 3: Cross multiply
    729,014,729.22x = 1,006,042,992.48 × 394,487,254.89
  4. Step 4: Simplify right side
    729,014,729.22x = 396,871,138,404,756,096
  5. Step 5: Solve for x
    x = 396,871,138,404,756,096/729,014,729.22
  6. Step 6: Final answer
    x = 544,393,854.47

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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.