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Finding the Fourth Proportional to 518,794.40, 778,191.60 and 297,200.80

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Solution

The fourth proportional to 518,794.40, 778,191.60 and 297,200.80 is: 445,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,794.40 : 778,191.60 = 297,200.80 : x
  2. Step 2: Convert to fraction form
    518,794.40/778,191.60 = 297,200.80/x
  3. Step 3: Cross multiply
    518,794.40x = 778,191.60 × 297,200.80
  4. Step 4: Simplify right side
    518,794.40x = 231,279,166,073.28
  5. Step 5: Solve for x
    x = 231,279,166,073.28/518,794.40
  6. Step 6: Final answer
    x = 445,801.20

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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.