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Finding the Fourth Proportional to 561,859.10, 775,576.41 and 368,279.28

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Solution

The fourth proportional to 561,859.10, 775,576.41 and 368,279.28 is: 508,363.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,859.10 : 775,576.41 = 368,279.28 : x
  2. Step 2: Convert to fraction form
    561,859.10/775,576.41 = 368,279.28/x
  3. Step 3: Cross multiply
    561,859.10x = 775,576.41 × 368,279.28
  4. Step 4: Simplify right side
    561,859.10x = 285,628,721,859.79
  5. Step 5: Solve for x
    x = 285,628,721,859.79/561,859.10
  6. Step 6: Final answer
    x = 508,363.61

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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.