Home / 990,010.20-1,485,015.30-690,828.60

Finding the Fourth Proportional to 990,010.20, 1,485,015.30 and 690,828.60

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Solution

The fourth proportional to 990,010.20, 1,485,015.30 and 690,828.60 is: 1,036,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,010.20 : 1,485,015.30 = 690,828.60 : x
  2. Step 2: Convert to fraction form
    990,010.20/1,485,015.30 = 690,828.60/x
  3. Step 3: Cross multiply
    990,010.20x = 1,485,015.30 × 690,828.60
  4. Step 4: Simplify right side
    990,010.20x = 1,025,891,040,677.58
  5. Step 5: Solve for x
    x = 1,025,891,040,677.58/990,010.20
  6. Step 6: Final answer
    x = 1,036,242.90

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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.