Home / 515,540,059.34-711,445,242.42-280,592,404.38

Finding the Fourth Proportional to 515,540,059.34, 711,445,242.42 and 280,592,404.38

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Solution

The fourth proportional to 515,540,059.34, 711,445,242.42 and 280,592,404.38 is: 387,217,496.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,540,059.34 : 711,445,242.42 = 280,592,404.38 : x
  2. Step 2: Convert to fraction form
    515,540,059.34/711,445,242.42 = 280,592,404.38/x
  3. Step 3: Cross multiply
    515,540,059.34x = 711,445,242.42 × 280,592,404.38
  4. Step 4: Simplify right side
    515,540,059.34x = 199,626,131,155,339,744
  5. Step 5: Solve for x
    x = 199,626,131,155,339,744/515,540,059.34
  6. Step 6: Final answer
    x = 387,217,496.57

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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.