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Finding the Fourth Proportional to 421,996.80, 582,627.36 and 376,596.96

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Solution

The fourth proportional to 421,996.80, 582,627.36 and 376,596.96 is: 519,946.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,996.80 : 582,627.36 = 376,596.96 : x
  2. Step 2: Convert to fraction form
    421,996.80/582,627.36 = 376,596.96/x
  3. Step 3: Cross multiply
    421,996.80x = 582,627.36 × 376,596.96
  4. Step 4: Simplify right side
    421,996.80x = 219,415,692,588.83
  5. Step 5: Solve for x
    x = 219,415,692,588.83/421,996.80
  6. Step 6: Final answer
    x = 519,946.34

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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.