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Finding the Fourth Proportional to 518,923.48, 778,385.22 and 238,676.44

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Solution

The fourth proportional to 518,923.48, 778,385.22 and 238,676.44 is: 358,014.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,923.48 : 778,385.22 = 238,676.44 : x
  2. Step 2: Convert to fraction form
    518,923.48/778,385.22 = 238,676.44/x
  3. Step 3: Cross multiply
    518,923.48x = 778,385.22 × 238,676.44
  4. Step 4: Simplify right side
    518,923.48x = 185,782,213,258.22
  5. Step 5: Solve for x
    x = 185,782,213,258.22/518,923.48
  6. Step 6: Final answer
    x = 358,014.66

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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.