Home / 729,473,806.51-1,006,661,835.53-394,943,654.23

Finding the Fourth Proportional to 729,473,806.51, 1,006,661,835.53 and 394,943,654.23

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Solution

The fourth proportional to 729,473,806.51, 1,006,661,835.53 and 394,943,654.23 is: 545,015,736.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,473,806.51 : 1,006,661,835.53 = 394,943,654.23 : x
  2. Step 2: Convert to fraction form
    729,473,806.51/1,006,661,835.53 = 394,943,654.23/x
  3. Step 3: Cross multiply
    729,473,806.51x = 1,006,661,835.53 × 394,943,654.23
  4. Step 4: Simplify right side
    729,473,806.51x = 397,574,703,895,067,392
  5. Step 5: Solve for x
    x = 397,574,703,895,067,392/729,473,806.51
  6. Step 6: Final answer
    x = 545,015,736.48

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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.