Home / 989,628.58-1,364,785.77-836,986.78

Finding the Fourth Proportional to 989,628.58, 1,364,785.77 and 836,986.78

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Solution

The fourth proportional to 989,628.58, 1,364,785.77 and 836,986.78 is: 1,154,279.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,628.58 : 1,364,785.77 = 836,986.78 : x
  2. Step 2: Convert to fraction form
    989,628.58/1,364,785.77 = 836,986.78/x
  3. Step 3: Cross multiply
    989,628.58x = 1,364,785.77 × 836,986.78
  4. Step 4: Simplify right side
    989,628.58x = 1,142,307,647,022.12
  5. Step 5: Solve for x
    x = 1,142,307,647,022.12/989,628.58
  6. Step 6: Final answer
    x = 1,154,279.16

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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.