Home / 681,279.07-940,120.11-409,185.28

Finding the Fourth Proportional to 681,279.07, 940,120.11 and 409,185.28

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Solution

The fourth proportional to 681,279.07, 940,120.11 and 409,185.28 is: 564,648.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,279.07 : 940,120.11 = 409,185.28 : x
  2. Step 2: Convert to fraction form
    681,279.07/940,120.11 = 409,185.28/x
  3. Step 3: Cross multiply
    681,279.07x = 940,120.11 × 409,185.28
  4. Step 4: Simplify right side
    681,279.07x = 384,683,310,443.98
  5. Step 5: Solve for x
    x = 384,683,310,443.98/681,279.07
  6. Step 6: Final answer
    x = 564,648.65

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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.