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Finding the Fourth Proportional to 489,145.90, 733,718.85 and 329,713.60

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Solution

The fourth proportional to 489,145.90, 733,718.85 and 329,713.60 is: 494,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,145.90 : 733,718.85 = 329,713.60 : x
  2. Step 2: Convert to fraction form
    489,145.90/733,718.85 = 329,713.60/x
  3. Step 3: Cross multiply
    489,145.90x = 733,718.85 × 329,713.60
  4. Step 4: Simplify right side
    489,145.90x = 241,917,083,421.36
  5. Step 5: Solve for x
    x = 241,917,083,421.36/489,145.90
  6. Step 6: Final answer
    x = 494,570.40

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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.