Home / 990,720.45-1,485,612.25-383,793.03

Finding the Fourth Proportional to 990,720.45, 1,485,612.25 and 383,793.03

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Solution

The fourth proportional to 990,720.45, 1,485,612.25 and 383,793.03 is: 575,508.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,720.45 : 1,485,612.25 = 383,793.03 : x
  2. Step 2: Convert to fraction form
    990,720.45/1,485,612.25 = 383,793.03/x
  3. Step 3: Cross multiply
    990,720.45x = 1,485,612.25 × 383,793.03
  4. Step 4: Simplify right side
    990,720.45x = 570,167,626,832.62
  5. Step 5: Solve for x
    x = 570,167,626,832.62/990,720.45
  6. Step 6: Final answer
    x = 575,508.09

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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.