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Finding the Fourth Proportional to 489,089.70, 733,634.55 and 329,657.40

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Solution

The fourth proportional to 489,089.70, 733,634.55 and 329,657.40 is: 494,486.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,089.70 : 733,634.55 = 329,657.40 : x
  2. Step 2: Convert to fraction form
    489,089.70/733,634.55 = 329,657.40/x
  3. Step 3: Cross multiply
    489,089.70x = 733,634.55 × 329,657.40
  4. Step 4: Simplify right side
    489,089.70x = 241,848,058,303.17
  5. Step 5: Solve for x
    x = 241,848,058,303.17/489,089.70
  6. Step 6: Final answer
    x = 494,486.10

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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.