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Finding the Fourth Proportional to 489,042.60, 733,563.90 and 330,412.20

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Solution

The fourth proportional to 489,042.60, 733,563.90 and 330,412.20 is: 495,618.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,042.60 : 733,563.90 = 330,412.20 : x
  2. Step 2: Convert to fraction form
    489,042.60/733,563.90 = 330,412.20/x
  3. Step 3: Cross multiply
    489,042.60x = 733,563.90 × 330,412.20
  4. Step 4: Simplify right side
    489,042.60x = 242,378,462,039.58
  5. Step 5: Solve for x
    x = 242,378,462,039.58/489,042.60
  6. Step 6: Final answer
    x = 495,618.30

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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.