Home / 863,900.78-1,192,420.20-501,441.41

Finding the Fourth Proportional to 863,900.78, 1,192,420.20 and 501,441.41

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Solution

The fourth proportional to 863,900.78, 1,192,420.20 and 501,441.41 is: 692,126.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,900.78 : 1,192,420.20 = 501,441.41 : x
  2. Step 2: Convert to fraction form
    863,900.78/1,192,420.20 = 501,441.41/x
  3. Step 3: Cross multiply
    863,900.78x = 1,192,420.20 × 501,441.41
  4. Step 4: Simplify right side
    863,900.78x = 597,928,863,893.28
  5. Step 5: Solve for x
    x = 597,928,863,893.28/863,900.78
  6. Step 6: Final answer
    x = 692,126.78

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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.