Home / 492,619.20-679,776.96-322,558.08

Finding the Fourth Proportional to 492,619.20, 679,776.96 and 322,558.08

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Solution

The fourth proportional to 492,619.20, 679,776.96 and 322,558.08 is: 445,105.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,619.20 : 679,776.96 = 322,558.08 : x
  2. Step 2: Convert to fraction form
    492,619.20/679,776.96 = 322,558.08/x
  3. Step 3: Cross multiply
    492,619.20x = 679,776.96 × 322,558.08
  4. Step 4: Simplify right side
    492,619.20x = 219,267,551,045.84
  5. Step 5: Solve for x
    x = 219,267,551,045.84/492,619.20
  6. Step 6: Final answer
    x = 445,105.57

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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.