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Finding the Fourth Proportional to 561,346.62, 774,630.15 and 306,650.94

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Solution

The fourth proportional to 561,346.62, 774,630.15 and 306,650.94 is: 423,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,346.62 : 774,630.15 = 306,650.94 : x
  2. Step 2: Convert to fraction form
    561,346.62/774,630.15 = 306,650.94/x
  3. Step 3: Cross multiply
    561,346.62x = 774,630.15 × 306,650.94
  4. Step 4: Simplify right side
    561,346.62x = 237,541,063,649.84
  5. Step 5: Solve for x
    x = 237,541,063,649.84/561,346.62
  6. Step 6: Final answer
    x = 423,162.90

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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.