Home / 919,992.31-1,269,561.13-512,083.69

Finding the Fourth Proportional to 919,992.31, 1,269,561.13 and 512,083.69

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Solution

The fourth proportional to 919,992.31, 1,269,561.13 and 512,083.69 is: 706,659.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,992.31 : 1,269,561.13 = 512,083.69 : x
  2. Step 2: Convert to fraction form
    919,992.31/1,269,561.13 = 512,083.69/x
  3. Step 3: Cross multiply
    919,992.31x = 1,269,561.13 × 512,083.69
  4. Step 4: Simplify right side
    919,992.31x = 650,121,548,130.97
  5. Step 5: Solve for x
    x = 650,121,548,130.97/919,992.31
  6. Step 6: Final answer
    x = 706,659.76

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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.