Home / 390,140,686.78-584,801,375.91-131,266,032.60

Finding the Fourth Proportional to 390,140,686.78, 584,801,375.91 and 131,266,032.60

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Solution

The fourth proportional to 390,140,686.78, 584,801,375.91 and 131,266,032.60 is: 196,761,217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,140,686.78 : 584,801,375.91 = 131,266,032.60 : x
  2. Step 2: Convert to fraction form
    390,140,686.78/584,801,375.91 = 131,266,032.60/x
  3. Step 3: Cross multiply
    390,140,686.78x = 584,801,375.91 × 131,266,032.60
  4. Step 4: Simplify right side
    390,140,686.78x = 76,764,556,474,119,744
  5. Step 5: Solve for x
    x = 76,764,556,474,119,744/390,140,686.78
  6. Step 6: Final answer
    x = 196,761,217.36

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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.