Home / 843,889.28-1,264,137.78-393,989.36

Finding the Fourth Proportional to 843,889.28, 1,264,137.78 and 393,989.36

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Solution

The fourth proportional to 843,889.28, 1,264,137.78 and 393,989.36 is: 590,192.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,889.28 : 1,264,137.78 = 393,989.36 : x
  2. Step 2: Convert to fraction form
    843,889.28/1,264,137.78 = 393,989.36/x
  3. Step 3: Cross multiply
    843,889.28x = 1,264,137.78 × 393,989.36
  4. Step 4: Simplify right side
    843,889.28x = 498,056,834,894.02
  5. Step 5: Solve for x
    x = 498,056,834,894.02/843,889.28
  6. Step 6: Final answer
    x = 590,192.16

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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.