Home / 658,485,559.80-987,727,820.82-198,423,734.52

Finding the Fourth Proportional to 658,485,559.80, 987,727,820.82 and 198,423,734.52

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Solution

The fourth proportional to 658,485,559.80, 987,727,820.82 and 198,423,734.52 is: 297,635,445.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,485,559.80 : 987,727,820.82 = 198,423,734.52 : x
  2. Step 2: Convert to fraction form
    658,485,559.80/987,727,820.82 = 198,423,734.52/x
  3. Step 3: Cross multiply
    658,485,559.80x = 987,727,820.82 × 198,423,734.52
  4. Step 4: Simplify right side
    658,485,559.80x = 195,988,642,896,405,824
  5. Step 5: Solve for x
    x = 195,988,642,896,405,824/658,485,559.80
  6. Step 6: Final answer
    x = 297,635,445.42

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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.