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Finding the Fourth Proportional to 479,886.82, 662,543.33 and 305,555.41

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Solution

The fourth proportional to 479,886.82, 662,543.33 and 305,555.41 is: 421,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,886.82 : 662,543.33 = 305,555.41 : x
  2. Step 2: Convert to fraction form
    479,886.82/662,543.33 = 305,555.41/x
  3. Step 3: Cross multiply
    479,886.82x = 662,543.33 × 305,555.41
  4. Step 4: Simplify right side
    479,886.82x = 202,443,703,012.53
  5. Step 5: Solve for x
    x = 202,443,703,012.53/479,886.82
  6. Step 6: Final answer
    x = 421,857.18

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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.