Home / 613,220.09-919,867.03-258,261.77

Finding the Fourth Proportional to 613,220.09, 919,867.03 and 258,261.77

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Solution

The fourth proportional to 613,220.09, 919,867.03 and 258,261.77 is: 387,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,220.09 : 919,867.03 = 258,261.77 : x
  2. Step 2: Convert to fraction form
    613,220.09/919,867.03 = 258,261.77/x
  3. Step 3: Cross multiply
    613,220.09x = 919,867.03 × 258,261.77
  4. Step 4: Simplify right side
    613,220.09x = 237,566,488,986.46
  5. Step 5: Solve for x
    x = 237,566,488,986.46/613,220.09
  6. Step 6: Final answer
    x = 387,408.20

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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.