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Finding the Fourth Proportional to 515,394, 773,615.16 and 355,481.04

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Solution

The fourth proportional to 515,394, 773,615.16 and 355,481.04 is: 533,583.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,394 : 773,615.16 = 355,481.04 : x
  2. Step 2: Convert to fraction form
    515,394/773,615.16 = 355,481.04/x
  3. Step 3: Cross multiply
    515,394x = 773,615.16 × 355,481.04
  4. Step 4: Simplify right side
    515,394x = 275,005,521,636.57
  5. Step 5: Solve for x
    x = 275,005,521,636.57/515,394
  6. Step 6: Final answer
    x = 533,583.09

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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.