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Finding the Fourth Proportional to 489,043.90, 732,581.70 and 329,611.60

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Solution

The fourth proportional to 489,043.90, 732,581.70 and 329,611.60 is: 493,754.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,043.90 : 732,581.70 = 329,611.60 : x
  2. Step 2: Convert to fraction form
    489,043.90/732,581.70 = 329,611.60/x
  3. Step 3: Cross multiply
    489,043.90x = 732,581.70 × 329,611.60
  4. Step 4: Simplify right side
    489,043.90x = 241,467,426,267.72
  5. Step 5: Solve for x
    x = 241,467,426,267.72/489,043.90
  6. Step 6: Final answer
    x = 493,754.09

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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.