Home / 1,188,180.14-1,639,258.09-780,501.47

Finding the Fourth Proportional to 1,188,180.14, 1,639,258.09 and 780,501.47

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Solution

The fourth proportional to 1,188,180.14, 1,639,258.09 and 780,501.47 is: 1,076,809.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,180.14 : 1,639,258.09 = 780,501.47 : x
  2. Step 2: Convert to fraction form
    1,188,180.14/1,639,258.09 = 780,501.47/x
  3. Step 3: Cross multiply
    1,188,180.14x = 1,639,258.09 × 780,501.47
  4. Step 4: Simplify right side
    1,188,180.14x = 1,279,443,338,806.85
  5. Step 5: Solve for x
    x = 1,279,443,338,806.85/1,188,180.14
  6. Step 6: Final answer
    x = 1,076,809.23

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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.