Home / 885,775,376.80-1,328,663,065.20-821,278,122.40

Finding the Fourth Proportional to 885,775,376.80, 1,328,663,065.20 and 821,278,122.40

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Solution

The fourth proportional to 885,775,376.80, 1,328,663,065.20 and 821,278,122.40 is: 1,231,917,183.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,775,376.80 : 1,328,663,065.20 = 821,278,122.40 : x
  2. Step 2: Convert to fraction form
    885,775,376.80/1,328,663,065.20 = 821,278,122.40/x
  3. Step 3: Cross multiply
    885,775,376.80x = 1,328,663,065.20 × 821,278,122.40
  4. Step 4: Simplify right side
    885,775,376.80x = 1,091,201,907,489,684,736
  5. Step 5: Solve for x
    x = 1,091,201,907,489,684,736/885,775,376.80
  6. Step 6: Final answer
    x = 1,231,917,183.60

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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.