Home / 428,847.76-643,329.24-162,706.96

Finding the Fourth Proportional to 428,847.76, 643,329.24 and 162,706.96

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Solution

The fourth proportional to 428,847.76, 643,329.24 and 162,706.96 is: 244,082.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,847.76 : 643,329.24 = 162,706.96 : x
  2. Step 2: Convert to fraction form
    428,847.76/643,329.24 = 162,706.96/x
  3. Step 3: Cross multiply
    428,847.76x = 643,329.24 × 162,706.96
  4. Step 4: Simplify right side
    428,847.76x = 104,674,144,919.51
  5. Step 5: Solve for x
    x = 104,674,144,919.51/428,847.76
  6. Step 6: Final answer
    x = 244,082.29

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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.