Home / 657,707,100.39-986,780,902.55-215,070,192.81

Finding the Fourth Proportional to 657,707,100.39, 986,780,902.55 and 215,070,192.81

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Solution

The fourth proportional to 657,707,100.39, 986,780,902.55 and 215,070,192.81 is: 322,677,311.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,707,100.39 : 986,780,902.55 = 215,070,192.81 : x
  2. Step 2: Convert to fraction form
    657,707,100.39/986,780,902.55 = 215,070,192.81/x
  3. Step 3: Cross multiply
    657,707,100.39x = 986,780,902.55 × 215,070,192.81
  4. Step 4: Simplify right side
    657,707,100.39x = 212,227,158,971,578,976
  5. Step 5: Solve for x
    x = 212,227,158,971,578,976/657,707,100.39
  6. Step 6: Final answer
    x = 322,677,311.60

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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.