Home / 528,621.66-729,166.10-313,609.50

Finding the Fourth Proportional to 528,621.66, 729,166.10 and 313,609.50

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Solution

The fourth proportional to 528,621.66, 729,166.10 and 313,609.50 is: 432,584.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,621.66 : 729,166.10 = 313,609.50 : x
  2. Step 2: Convert to fraction form
    528,621.66/729,166.10 = 313,609.50/x
  3. Step 3: Cross multiply
    528,621.66x = 729,166.10 × 313,609.50
  4. Step 4: Simplify right side
    528,621.66x = 228,673,414,469.90
  5. Step 5: Solve for x
    x = 228,673,414,469.90/528,621.66
  6. Step 6: Final answer
    x = 432,584.27

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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.