Home / 1,188,975.60-1,640,734.38-679,710.78

Finding the Fourth Proportional to 1,188,975.60, 1,640,734.38 and 679,710.78

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Solution

The fourth proportional to 1,188,975.60, 1,640,734.38 and 679,710.78 is: 937,971.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,975.60 : 1,640,734.38 = 679,710.78 : x
  2. Step 2: Convert to fraction form
    1,188,975.60/1,640,734.38 = 679,710.78/x
  3. Step 3: Cross multiply
    1,188,975.60x = 1,640,734.38 × 679,710.78
  4. Step 4: Simplify right side
    1,188,975.60x = 1,115,224,845,202.62
  5. Step 5: Solve for x
    x = 1,115,224,845,202.62/1,188,975.60
  6. Step 6: Final answer
    x = 937,971.18

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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.