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Finding the Fourth Proportional to 489,098.60, 733,647.90 and 329,666.30

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Solution

The fourth proportional to 489,098.60, 733,647.90 and 329,666.30 is: 494,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,098.60 : 733,647.90 = 329,666.30 : x
  2. Step 2: Convert to fraction form
    489,098.60/733,647.90 = 329,666.30/x
  3. Step 3: Cross multiply
    489,098.60x = 733,647.90 × 329,666.30
  4. Step 4: Simplify right side
    489,098.60x = 241,858,988,695.77
  5. Step 5: Solve for x
    x = 241,858,988,695.77/489,098.60
  6. Step 6: Final answer
    x = 494,499.45

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Double scale
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Similar ratio
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1.5x scale

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.