Home / 1,078,431.32-1,617,505.96-320,257.28

Finding the Fourth Proportional to 1,078,431.32, 1,617,505.96 and 320,257.28

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Solution

The fourth proportional to 1,078,431.32, 1,617,505.96 and 320,257.28 is: 480,344.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,431.32 : 1,617,505.96 = 320,257.28 : x
  2. Step 2: Convert to fraction form
    1,078,431.32/1,617,505.96 = 320,257.28/x
  3. Step 3: Cross multiply
    1,078,431.32x = 1,617,505.96 × 320,257.28
  4. Step 4: Simplify right side
    1,078,431.32x = 518,018,059,133.39
  5. Step 5: Solve for x
    x = 518,018,059,133.39/1,078,431.32
  6. Step 6: Final answer
    x = 480,344.04

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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.