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Finding the Fourth Proportional to 888,129.90, 1,332,211.32 and 289,089

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Solution

The fourth proportional to 888,129.90, 1,332,211.32 and 289,089 is: 433,638.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,129.90 : 1,332,211.32 = 289,089 : x
  2. Step 2: Convert to fraction form
    888,129.90/1,332,211.32 = 289,089/x
  3. Step 3: Cross multiply
    888,129.90x = 1,332,211.32 × 289,089
  4. Step 4: Simplify right side
    888,129.90x = 385,127,638,287.48
  5. Step 5: Solve for x
    x = 385,127,638,287.48/888,129.90
  6. Step 6: Final answer
    x = 433,638.86

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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.