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Finding the Fourth Proportional to 802,910.80, 1,203,345.60 and 329,060.80

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Solution

The fourth proportional to 802,910.80, 1,203,345.60 and 329,060.80 is: 493,172.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,910.80 : 1,203,345.60 = 329,060.80 : x
  2. Step 2: Convert to fraction form
    802,910.80/1,203,345.60 = 329,060.80/x
  3. Step 3: Cross multiply
    802,910.80x = 1,203,345.60 × 329,060.80
  4. Step 4: Simplify right side
    802,910.80x = 395,973,865,812.48
  5. Step 5: Solve for x
    x = 395,973,865,812.48/802,910.80
  6. Step 6: Final answer
    x = 493,172.92

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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.