Home / 1,291,632,036.73-1,781,893,068.42-789,862,755.85

Finding the Fourth Proportional to 1,291,632,036.73, 1,781,893,068.42 and 789,862,755.85

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Solution

The fourth proportional to 1,291,632,036.73, 1,781,893,068.42 and 789,862,755.85 is: 1,089,668,674.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,632,036.73 : 1,781,893,068.42 = 789,862,755.85 : x
  2. Step 2: Convert to fraction form
    1,291,632,036.73/1,781,893,068.42 = 789,862,755.85/x
  3. Step 3: Cross multiply
    1,291,632,036.73x = 1,781,893,068.42 × 789,862,755.85
  4. Step 4: Simplify right side
    1,291,632,036.73x = 1,407,450,969,652,233,984
  5. Step 5: Solve for x
    x = 1,407,450,969,652,233,984/1,291,632,036.73
  6. Step 6: Final answer
    x = 1,089,668,674.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.