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Finding the Fourth Proportional to 872,269.20, 1,307,868 and 339,168.82

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Solution

The fourth proportional to 872,269.20, 1,307,868 and 339,168.82 is: 508,544.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,269.20 : 1,307,868 = 339,168.82 : x
  2. Step 2: Convert to fraction form
    872,269.20/1,307,868 = 339,168.82/x
  3. Step 3: Cross multiply
    872,269.20x = 1,307,868 × 339,168.82
  4. Step 4: Simplify right side
    872,269.20x = 443,588,046,275.76
  5. Step 5: Solve for x
    x = 443,588,046,275.76/872,269.20
  6. Step 6: Final answer
    x = 508,544.89

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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.