Home / 989,839.20-1,484,758.80-691,240.80

Finding the Fourth Proportional to 989,839.20, 1,484,758.80 and 691,240.80

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Solution

The fourth proportional to 989,839.20, 1,484,758.80 and 691,240.80 is: 1,036,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,839.20 : 1,484,758.80 = 691,240.80 : x
  2. Step 2: Convert to fraction form
    989,839.20/1,484,758.80 = 691,240.80/x
  3. Step 3: Cross multiply
    989,839.20x = 1,484,758.80 × 691,240.80
  4. Step 4: Simplify right side
    989,839.20x = 1,026,325,860,719.04
  5. Step 5: Solve for x
    x = 1,026,325,860,719.04/989,839.20
  6. Step 6: Final answer
    x = 1,036,861.20

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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.