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Finding the Fourth Proportional to 379,612.44, 523,945.26 and 315,888.12

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Solution

The fourth proportional to 379,612.44, 523,945.26 and 315,888.12 is: 435,992.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,612.44 : 523,945.26 = 315,888.12 : x
  2. Step 2: Convert to fraction form
    379,612.44/523,945.26 = 315,888.12/x
  3. Step 3: Cross multiply
    379,612.44x = 523,945.26 × 315,888.12
  4. Step 4: Simplify right side
    379,612.44x = 165,508,083,164.31
  5. Step 5: Solve for x
    x = 165,508,083,164.31/379,612.44
  6. Step 6: Final answer
    x = 435,992.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.