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Finding the Fourth Proportional to 479,672.84, 662,213.62 and 288,733.32

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Solution

The fourth proportional to 479,672.84, 662,213.62 and 288,733.32 is: 398,611.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,672.84 : 662,213.62 = 288,733.32 : x
  2. Step 2: Convert to fraction form
    479,672.84/662,213.62 = 288,733.32/x
  3. Step 3: Cross multiply
    479,672.84x = 662,213.62 × 288,733.32
  4. Step 4: Simplify right side
    479,672.84x = 191,203,137,051.82
  5. Step 5: Solve for x
    x = 191,203,137,051.82/479,672.84
  6. Step 6: Final answer
    x = 398,611.56

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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.