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Finding the Fourth Proportional to 489,043.10, 733,564.65 and 339,743.90

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Solution

The fourth proportional to 489,043.10, 733,564.65 and 339,743.90 is: 509,615.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,043.10 : 733,564.65 = 339,743.90 : x
  2. Step 2: Convert to fraction form
    489,043.10/733,564.65 = 339,743.90/x
  3. Step 3: Cross multiply
    489,043.10x = 733,564.65 × 339,743.90
  4. Step 4: Simplify right side
    489,043.10x = 249,224,115,093.14
  5. Step 5: Solve for x
    x = 249,224,115,093.14/489,043.10
  6. Step 6: Final answer
    x = 509,615.85

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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.