Home / 807,404.45-1,211,115.92-345,720.24

Finding the Fourth Proportional to 807,404.45, 1,211,115.92 and 345,720.24

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Solution

The fourth proportional to 807,404.45, 1,211,115.92 and 345,720.24 is: 518,584.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,404.45 : 1,211,115.92 = 345,720.24 : x
  2. Step 2: Convert to fraction form
    807,404.45/1,211,115.92 = 345,720.24/x
  3. Step 3: Cross multiply
    807,404.45x = 1,211,115.92 × 345,720.24
  4. Step 4: Simplify right side
    807,404.45x = 418,707,284,801.62
  5. Step 5: Solve for x
    x = 418,707,284,801.62/807,404.45
  6. Step 6: Final answer
    x = 518,584.32

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1.5x scale

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.