Home / 1,288,861.97-1,778,685.81-715,902.14

Finding the Fourth Proportional to 1,288,861.97, 1,778,685.81 and 715,902.14

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Solution

The fourth proportional to 1,288,861.97, 1,778,685.81 and 715,902.14 is: 987,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,861.97 : 1,778,685.81 = 715,902.14 : x
  2. Step 2: Convert to fraction form
    1,288,861.97/1,778,685.81 = 715,902.14/x
  3. Step 3: Cross multiply
    1,288,861.97x = 1,778,685.81 × 715,902.14
  4. Step 4: Simplify right side
    1,288,861.97x = 1,273,364,969,523.61
  5. Step 5: Solve for x
    x = 1,273,364,969,523.61/1,288,861.97
  6. Step 6: Final answer
    x = 987,976.22

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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.