Home / 1,256,739.75-1,885,401.21-415,240.47

Finding the Fourth Proportional to 1,256,739.75, 1,885,401.21 and 415,240.47

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Solution

The fourth proportional to 1,256,739.75, 1,885,401.21 and 415,240.47 is: 622,957.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,739.75 : 1,885,401.21 = 415,240.47 : x
  2. Step 2: Convert to fraction form
    1,256,739.75/1,885,401.21 = 415,240.47/x
  3. Step 3: Cross multiply
    1,256,739.75x = 1,885,401.21 × 415,240.47
  4. Step 4: Simplify right side
    1,256,739.75x = 782,894,884,578.97
  5. Step 5: Solve for x
    x = 782,894,884,578.97/1,256,739.75
  6. Step 6: Final answer
    x = 622,957.05

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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.