Home / 989,378.20-1,482,317.70-838,912.60

Finding the Fourth Proportional to 989,378.20, 1,482,317.70 and 838,912.60

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Solution

The fourth proportional to 989,378.20, 1,482,317.70 and 838,912.60 is: 1,256,885.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,378.20 : 1,482,317.70 = 838,912.60 : x
  2. Step 2: Convert to fraction form
    989,378.20/1,482,317.70 = 838,912.60/x
  3. Step 3: Cross multiply
    989,378.20x = 1,482,317.70 × 838,912.60
  4. Step 4: Simplify right side
    989,378.20x = 1,243,534,995,733.02
  5. Step 5: Solve for x
    x = 1,243,534,995,733.02/989,378.20
  6. Step 6: Final answer
    x = 1,256,885.38

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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.