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Finding the Fourth Proportional to 561,633.18, 775,054.17 and 306,984.36

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Solution

The fourth proportional to 561,633.18, 775,054.17 and 306,984.36 is: 423,638.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,633.18 : 775,054.17 = 306,984.36 : x
  2. Step 2: Convert to fraction form
    561,633.18/775,054.17 = 306,984.36/x
  3. Step 3: Cross multiply
    561,633.18x = 775,054.17 × 306,984.36
  4. Step 4: Simplify right side
    561,633.18x = 237,929,508,342.78
  5. Step 5: Solve for x
    x = 237,929,508,342.78/561,633.18
  6. Step 6: Final answer
    x = 423,638.63

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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.