Home / 725,023.89-1,087,557.26-345,984.90

Finding the Fourth Proportional to 725,023.89, 1,087,557.26 and 345,984.90

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Solution

The fourth proportional to 725,023.89, 1,087,557.26 and 345,984.90 is: 518,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,023.89 : 1,087,557.26 = 345,984.90 : x
  2. Step 2: Convert to fraction form
    725,023.89/1,087,557.26 = 345,984.90/x
  3. Step 3: Cross multiply
    725,023.89x = 1,087,557.26 × 345,984.90
  4. Step 4: Simplify right side
    725,023.89x = 376,278,388,115.45
  5. Step 5: Solve for x
    x = 376,278,388,115.45/725,023.89
  6. Step 6: Final answer
    x = 518,987.57

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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.