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Finding the Fourth Proportional to 827,703.60, 1,239,915.15 and 729,069.90

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Solution

The fourth proportional to 827,703.60, 1,239,915.15 and 729,069.90 is: 1,092,160.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,703.60 : 1,239,915.15 = 729,069.90 : x
  2. Step 2: Convert to fraction form
    827,703.60/1,239,915.15 = 729,069.90/x
  3. Step 3: Cross multiply
    827,703.60x = 1,239,915.15 × 729,069.90
  4. Step 4: Simplify right side
    827,703.60x = 903,984,814,418.99
  5. Step 5: Solve for x
    x = 903,984,814,418.99/827,703.60
  6. Step 6: Final answer
    x = 1,092,160.06

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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.