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Finding the Fourth Proportional to 478,696.17, 660,604.73 and 263,836.79

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Solution

The fourth proportional to 478,696.17, 660,604.73 and 263,836.79 is: 364,096.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,696.17 : 660,604.73 = 263,836.79 : x
  2. Step 2: Convert to fraction form
    478,696.17/660,604.73 = 263,836.79/x
  3. Step 3: Cross multiply
    478,696.17x = 660,604.73 × 263,836.79
  4. Step 4: Simplify right side
    478,696.17x = 174,291,826,799.81
  5. Step 5: Solve for x
    x = 174,291,826,799.81/478,696.17
  6. Step 6: Final answer
    x = 364,096.97

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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.