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Finding the Fourth Proportional to 572,668.20, 789,918.89 and 351,808.88

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Solution

The fourth proportional to 572,668.20, 789,918.89 and 351,808.88 is: 485,273.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,668.20 : 789,918.89 = 351,808.88 : x
  2. Step 2: Convert to fraction form
    572,668.20/789,918.89 = 351,808.88/x
  3. Step 3: Cross multiply
    572,668.20x = 789,918.89 × 351,808.88
  4. Step 4: Simplify right side
    572,668.20x = 277,900,474,273.10
  5. Step 5: Solve for x
    x = 277,900,474,273.10/572,668.20
  6. Step 6: Final answer
    x = 485,273.10

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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.