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Finding the Fourth Proportional to 489,324.80, 733,987.20 and 472,217.60

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Solution

The fourth proportional to 489,324.80, 733,987.20 and 472,217.60 is: 708,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,324.80 : 733,987.20 = 472,217.60 : x
  2. Step 2: Convert to fraction form
    489,324.80/733,987.20 = 472,217.60/x
  3. Step 3: Cross multiply
    489,324.80x = 733,987.20 × 472,217.60
  4. Step 4: Simplify right side
    489,324.80x = 346,601,674,014.72
  5. Step 5: Solve for x
    x = 346,601,674,014.72/489,324.80
  6. Step 6: Final answer
    x = 708,326.40

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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.