Home / 657,707,106.40-986,780,911.56-215,070,198.82

Finding the Fourth Proportional to 657,707,106.40, 986,780,911.56 and 215,070,198.82

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Solution

The fourth proportional to 657,707,106.40, 986,780,911.56 and 215,070,198.82 is: 322,677,320.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,707,106.40 : 986,780,911.56 = 215,070,198.82 : x
  2. Step 2: Convert to fraction form
    657,707,106.40/986,780,911.56 = 215,070,198.82/x
  3. Step 3: Cross multiply
    657,707,106.40x = 986,780,911.56 × 215,070,198.82
  4. Step 4: Simplify right side
    657,707,106.40x = 212,227,166,840,990,016
  5. Step 5: Solve for x
    x = 212,227,166,840,990,016/657,707,106.40
  6. Step 6: Final answer
    x = 322,677,320.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.