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Finding the Fourth Proportional to 528,938.91, 793,383.72 and 129,558.56

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Solution

The fourth proportional to 528,938.91, 793,383.72 and 129,558.56 is: 194,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,938.91 : 793,383.72 = 129,558.56 : x
  2. Step 2: Convert to fraction form
    528,938.91/793,383.72 = 129,558.56/x
  3. Step 3: Cross multiply
    528,938.91x = 793,383.72 × 129,558.56
  4. Step 4: Simplify right side
    528,938.91x = 102,789,648,323.73
  5. Step 5: Solve for x
    x = 102,789,648,323.73/528,938.91
  6. Step 6: Final answer
    x = 194,331.80

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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.