Home / 754,538.88-1,040,736.38-512,401.12

Finding the Fourth Proportional to 754,538.88, 1,040,736.38 and 512,401.12

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Solution

The fourth proportional to 754,538.88, 1,040,736.38 and 512,401.12 is: 706,755.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    754,538.88 : 1,040,736.38 = 512,401.12 : x
  2. Step 2: Convert to fraction form
    754,538.88/1,040,736.38 = 512,401.12/x
  3. Step 3: Cross multiply
    754,538.88x = 1,040,736.38 × 512,401.12
  4. Step 4: Simplify right side
    754,538.88x = 533,274,486,736.75
  5. Step 5: Solve for x
    x = 533,274,486,736.75/754,538.88
  6. Step 6: Final answer
    x = 706,755.48

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.