Home / 492,431.20-679,722.24-306,308.32

Finding the Fourth Proportional to 492,431.20, 679,722.24 and 306,308.32

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Solution

The fourth proportional to 492,431.20, 679,722.24 and 306,308.32 is: 422,809.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,431.20 : 679,722.24 = 306,308.32 : x
  2. Step 2: Convert to fraction form
    492,431.20/679,722.24 = 306,308.32/x
  3. Step 3: Cross multiply
    492,431.20x = 679,722.24 × 306,308.32
  4. Step 4: Simplify right side
    492,431.20x = 208,204,577,401.04
  5. Step 5: Solve for x
    x = 208,204,577,401.04/492,431.20
  6. Step 6: Final answer
    x = 422,809.48

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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.