Home / 989,965.56-1,365,119.82-587,479.80

Finding the Fourth Proportional to 989,965.56, 1,365,119.82 and 587,479.80

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Solution

The fourth proportional to 989,965.56, 1,365,119.82 and 587,479.80 is: 810,109.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,965.56 : 1,365,119.82 = 587,479.80 : x
  2. Step 2: Convert to fraction form
    989,965.56/1,365,119.82 = 587,479.80/x
  3. Step 3: Cross multiply
    989,965.56x = 1,365,119.82 × 587,479.80
  4. Step 4: Simplify right side
    989,965.56x = 801,980,318,829.64
  5. Step 5: Solve for x
    x = 801,980,318,829.64/989,965.56
  6. Step 6: Final answer
    x = 810,109.31

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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.