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Finding the Fourth Proportional to 880,611.40, 1,320,042.30 and 406,469.80

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Solution

The fourth proportional to 880,611.40, 1,320,042.30 and 406,469.80 is: 609,300.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,611.40 : 1,320,042.30 = 406,469.80 : x
  2. Step 2: Convert to fraction form
    880,611.40/1,320,042.30 = 406,469.80/x
  3. Step 3: Cross multiply
    880,611.40x = 1,320,042.30 × 406,469.80
  4. Step 4: Simplify right side
    880,611.40x = 536,557,329,672.54
  5. Step 5: Solve for x
    x = 536,557,329,672.54/880,611.40
  6. Step 6: Final answer
    x = 609,300.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.