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Finding the Fourth Proportional to 448,668.06, 619,006.95 and 287,611.98

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Solution

The fourth proportional to 448,668.06, 619,006.95 and 287,611.98 is: 396,805.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,668.06 : 619,006.95 = 287,611.98 : x
  2. Step 2: Convert to fraction form
    448,668.06/619,006.95 = 287,611.98/x
  3. Step 3: Cross multiply
    448,668.06x = 619,006.95 × 287,611.98
  4. Step 4: Simplify right side
    448,668.06x = 178,033,814,523.26
  5. Step 5: Solve for x
    x = 178,033,814,523.26/448,668.06
  6. Step 6: Final answer
    x = 396,805.19

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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.