Home / 726,176.34-1,086,935.36-388,372.32

Finding the Fourth Proportional to 726,176.34, 1,086,935.36 and 388,372.32

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Solution

The fourth proportional to 726,176.34, 1,086,935.36 and 388,372.32 is: 581,312.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,176.34 : 1,086,935.36 = 388,372.32 : x
  2. Step 2: Convert to fraction form
    726,176.34/1,086,935.36 = 388,372.32/x
  3. Step 3: Cross multiply
    726,176.34x = 1,086,935.36 × 388,372.32
  4. Step 4: Simplify right side
    726,176.34x = 422,135,605,511.37
  5. Step 5: Solve for x
    x = 422,135,605,511.37/726,176.34
  6. Step 6: Final answer
    x = 581,312.81

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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.