Home / 712,190.22-982,822.73-389,920.79

Finding the Fourth Proportional to 712,190.22, 982,822.73 and 389,920.79

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Solution

The fourth proportional to 712,190.22, 982,822.73 and 389,920.79 is: 538,090.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,190.22 : 982,822.73 = 389,920.79 : x
  2. Step 2: Convert to fraction form
    712,190.22/982,822.73 = 389,920.79/x
  3. Step 3: Cross multiply
    712,190.22x = 982,822.73 × 389,920.79
  4. Step 4: Simplify right side
    712,190.22x = 383,223,008,447.84
  5. Step 5: Solve for x
    x = 383,223,008,447.84/712,190.22
  6. Step 6: Final answer
    x = 538,090.80

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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.