Home / 885,969.60-1,222,212.96-643,876.80

Finding the Fourth Proportional to 885,969.60, 1,222,212.96 and 643,876.80

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Solution

The fourth proportional to 885,969.60, 1,222,212.96 and 643,876.80 is: 888,241.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,969.60 : 1,222,212.96 = 643,876.80 : x
  2. Step 2: Convert to fraction form
    885,969.60/1,222,212.96 = 643,876.80/x
  3. Step 3: Cross multiply
    885,969.60x = 1,222,212.96 × 643,876.80
  4. Step 4: Simplify right side
    885,969.60x = 786,954,569,603.33
  5. Step 5: Solve for x
    x = 786,954,569,603.33/885,969.60
  6. Step 6: Final answer
    x = 888,241.05

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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.