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Finding the Fourth Proportional to 528,072.70, 792,109.05 and 318,120.70

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Solution

The fourth proportional to 528,072.70, 792,109.05 and 318,120.70 is: 477,181.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,072.70 : 792,109.05 = 318,120.70 : x
  2. Step 2: Convert to fraction form
    528,072.70/792,109.05 = 318,120.70/x
  3. Step 3: Cross multiply
    528,072.70x = 792,109.05 × 318,120.70
  4. Step 4: Simplify right side
    528,072.70x = 251,986,285,462.34
  5. Step 5: Solve for x
    x = 251,986,285,462.34/528,072.70
  6. Step 6: Final answer
    x = 477,181.05

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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.