Home / 989,858.20-1,484,787.30-691,259.80

Finding the Fourth Proportional to 989,858.20, 1,484,787.30 and 691,259.80

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Solution

The fourth proportional to 989,858.20, 1,484,787.30 and 691,259.80 is: 1,036,889.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,858.20 : 1,484,787.30 = 691,259.80 : x
  2. Step 2: Convert to fraction form
    989,858.20/1,484,787.30 = 691,259.80/x
  3. Step 3: Cross multiply
    989,858.20x = 1,484,787.30 × 691,259.80
  4. Step 4: Simplify right side
    989,858.20x = 1,026,373,772,040.54
  5. Step 5: Solve for x
    x = 1,026,373,772,040.54/989,858.20
  6. Step 6: Final answer
    x = 1,036,889.70

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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.