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Finding the Fourth Proportional to 489,118.90, 732,694.20 and 329,686.60

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Solution

The fourth proportional to 489,118.90, 732,694.20 and 329,686.60 is: 493,866.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,118.90 : 732,694.20 = 329,686.60 : x
  2. Step 2: Convert to fraction form
    489,118.90/732,694.20 = 329,686.60/x
  3. Step 3: Cross multiply
    489,118.90x = 732,694.20 × 329,686.60
  4. Step 4: Simplify right side
    489,118.90x = 241,559,459,637.72
  5. Step 5: Solve for x
    x = 241,559,459,637.72/489,118.90
  6. Step 6: Final answer
    x = 493,866.54

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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.