Home / 989,505.20-1,484,257.80-670,640.60

Finding the Fourth Proportional to 989,505.20, 1,484,257.80 and 670,640.60

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Solution

The fourth proportional to 989,505.20, 1,484,257.80 and 670,640.60 is: 1,005,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,505.20 : 1,484,257.80 = 670,640.60 : x
  2. Step 2: Convert to fraction form
    989,505.20/1,484,257.80 = 670,640.60/x
  3. Step 3: Cross multiply
    989,505.20x = 1,484,257.80 × 670,640.60
  4. Step 4: Simplify right side
    989,505.20x = 995,403,541,546.68
  5. Step 5: Solve for x
    x = 995,403,541,546.68/989,505.20
  6. Step 6: Final answer
    x = 1,005,960.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.