Home / 728,681,186.75-1,093,021,738.61-204,127,951.21

Finding the Fourth Proportional to 728,681,186.75, 1,093,021,738.61 and 204,127,951.21

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Solution

The fourth proportional to 728,681,186.75, 1,093,021,738.61 and 204,127,951.21 is: 306,191,915.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,681,186.75 : 1,093,021,738.61 = 204,127,951.21 : x
  2. Step 2: Convert to fraction form
    728,681,186.75/1,093,021,738.61 = 204,127,951.21/x
  3. Step 3: Cross multiply
    728,681,186.75x = 1,093,021,738.61 × 204,127,951.21
  4. Step 4: Simplify right side
    728,681,186.75x = 223,116,288,126,698,272
  5. Step 5: Solve for x
    x = 223,116,288,126,698,272/728,681,186.75
  6. Step 6: Final answer
    x = 306,191,915.18

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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.