Home / 486,286.37-671,216.33-282,383.45

Finding the Fourth Proportional to 486,286.37, 671,216.33 and 282,383.45

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Solution

The fourth proportional to 486,286.37, 671,216.33 and 282,383.45 is: 389,771.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,286.37 : 671,216.33 = 282,383.45 : x
  2. Step 2: Convert to fraction form
    486,286.37/671,216.33 = 282,383.45/x
  3. Step 3: Cross multiply
    486,286.37x = 671,216.33 × 282,383.45
  4. Step 4: Simplify right side
    486,286.37x = 189,540,381,549.82
  5. Step 5: Solve for x
    x = 189,540,381,549.82/486,286.37
  6. Step 6: Final answer
    x = 389,771.12

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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.