Home / 843,878.28-1,264,121.28-393,978.36

Finding the Fourth Proportional to 843,878.28, 1,264,121.28 and 393,978.36

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Solution

The fourth proportional to 843,878.28, 1,264,121.28 and 393,978.36 is: 590,175.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,878.28 : 1,264,121.28 = 393,978.36 : x
  2. Step 2: Convert to fraction form
    843,878.28/1,264,121.28 = 393,978.36/x
  3. Step 3: Cross multiply
    843,878.28x = 1,264,121.28 × 393,978.36
  4. Step 4: Simplify right side
    843,878.28x = 498,036,428,735.50
  5. Step 5: Solve for x
    x = 498,036,428,735.50/843,878.28
  6. Step 6: Final answer
    x = 590,175.67

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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.