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Finding the Fourth Proportional to 561,674.56, 775,110.80 and 307,026.72

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Solution

The fourth proportional to 561,674.56, 775,110.80 and 307,026.72 is: 423,696.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,674.56 : 775,110.80 = 307,026.72 : x
  2. Step 2: Convert to fraction form
    561,674.56/775,110.80 = 307,026.72/x
  3. Step 3: Cross multiply
    561,674.56x = 775,110.80 × 307,026.72
  4. Step 4: Simplify right side
    561,674.56x = 237,979,726,560.58
  5. Step 5: Solve for x
    x = 237,979,726,560.58/561,674.56
  6. Step 6: Final answer
    x = 423,696.82

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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.