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Finding the Fourth Proportional to 489,122.90, 732,700.20 and 329,690.60

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Solution

The fourth proportional to 489,122.90, 732,700.20 and 329,690.60 is: 493,872.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,122.90 : 732,700.20 = 329,690.60 : x
  2. Step 2: Convert to fraction form
    489,122.90/732,700.20 = 329,690.60/x
  3. Step 3: Cross multiply
    489,122.90x = 732,700.20 × 329,690.60
  4. Step 4: Simplify right side
    489,122.90x = 241,564,368,558.12
  5. Step 5: Solve for x
    x = 241,564,368,558.12/489,122.90
  6. Step 6: Final answer
    x = 493,872.54

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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.