Home / 989,601.40-1,483,235.70-739,991.80

Finding the Fourth Proportional to 989,601.40, 1,483,235.70 and 739,991.80

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Solution

The fourth proportional to 989,601.40, 1,483,235.70 and 739,991.80 is: 1,109,115.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,601.40 : 1,483,235.70 = 739,991.80 : x
  2. Step 2: Convert to fraction form
    989,601.40/1,483,235.70 = 739,991.80/x
  3. Step 3: Cross multiply
    989,601.40x = 1,483,235.70 × 739,991.80
  4. Step 4: Simplify right side
    989,601.40x = 1,097,582,255,467.26
  5. Step 5: Solve for x
    x = 1,097,582,255,467.26/989,601.40
  6. Step 6: Final answer
    x = 1,109,115.50

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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.