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Finding the Fourth Proportional to 478,628.88, 660,497.94 and 263,763.42

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Solution

The fourth proportional to 478,628.88, 660,497.94 and 263,763.42 is: 363,988.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,628.88 : 660,497.94 = 263,763.42 : x
  2. Step 2: Convert to fraction form
    478,628.88/660,497.94 = 263,763.42/x
  3. Step 3: Cross multiply
    478,628.88x = 660,497.94 × 263,763.42
  4. Step 4: Simplify right side
    478,628.88x = 174,215,195,557.36
  5. Step 5: Solve for x
    x = 174,215,195,557.36/478,628.88
  6. Step 6: Final answer
    x = 363,988.06

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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.