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Finding the Fourth Proportional to 499,009.40, 748,983.90 and 262,521.80

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Solution

The fourth proportional to 499,009.40, 748,983.90 and 262,521.80 is: 394,029.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,009.40 : 748,983.90 = 262,521.80 : x
  2. Step 2: Convert to fraction form
    499,009.40/748,983.90 = 262,521.80/x
  3. Step 3: Cross multiply
    499,009.40x = 748,983.90 × 262,521.80
  4. Step 4: Simplify right side
    499,009.40x = 196,624,601,599.02
  5. Step 5: Solve for x
    x = 196,624,601,599.02/499,009.40
  6. Step 6: Final answer
    x = 394,029.86

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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.