Home / 989,610.40-1,483,249.20-740,000.80

Finding the Fourth Proportional to 989,610.40, 1,483,249.20 and 740,000.80

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Solution

The fourth proportional to 989,610.40, 1,483,249.20 and 740,000.80 is: 1,109,129.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,610.40 : 1,483,249.20 = 740,000.80 : x
  2. Step 2: Convert to fraction form
    989,610.40/1,483,249.20 = 740,000.80/x
  3. Step 3: Cross multiply
    989,610.40x = 1,483,249.20 × 740,000.80
  4. Step 4: Simplify right side
    989,610.40x = 1,097,605,594,599.36
  5. Step 5: Solve for x
    x = 1,097,605,594,599.36/989,610.40
  6. Step 6: Final answer
    x = 1,109,129.00

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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.