Home / 989,840.20-1,484,760.30-691,241.80

Finding the Fourth Proportional to 989,840.20, 1,484,760.30 and 691,241.80

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Solution

The fourth proportional to 989,840.20, 1,484,760.30 and 691,241.80 is: 1,036,862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,840.20 : 1,484,760.30 = 691,241.80 : x
  2. Step 2: Convert to fraction form
    989,840.20/1,484,760.30 = 691,241.80/x
  3. Step 3: Cross multiply
    989,840.20x = 1,484,760.30 × 691,241.80
  4. Step 4: Simplify right side
    989,840.20x = 1,026,328,382,340.54
  5. Step 5: Solve for x
    x = 1,026,328,382,340.54/989,840.20
  6. Step 6: Final answer
    x = 1,036,862.70

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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.