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Finding the Fourth Proportional to 587,128.72, 810,237.60 and 332,529.12

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Solution

The fourth proportional to 587,128.72, 810,237.60 and 332,529.12 is: 458,890.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,128.72 : 810,237.60 = 332,529.12 : x
  2. Step 2: Convert to fraction form
    587,128.72/810,237.60 = 332,529.12/x
  3. Step 3: Cross multiply
    587,128.72x = 810,237.60 × 332,529.12
  4. Step 4: Simplify right side
    587,128.72x = 269,427,596,118.91
  5. Step 5: Solve for x
    x = 269,427,596,118.91/587,128.72
  6. Step 6: Final answer
    x = 458,890.17

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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.