Home / 385,456,978,609.53-531,943,387,290.60-211,848,271,707.64

Finding the Fourth Proportional to 385,456,978,609.53, 531,943,387,290.60 and 211,848,271,707.64

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Solution

The fourth proportional to 385,456,978,609.53, 531,943,387,290.60 and 211,848,271,707.64 is: 292,357,626,135.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,456,978,609.53 : 531,943,387,290.60 = 211,848,271,707.64 : x
  2. Step 2: Convert to fraction form
    385,456,978,609.53/531,943,387,290.60 = 211,848,271,707.64/x
  3. Step 3: Cross multiply
    385,456,978,609.53x = 531,943,387,290.60 × 211,848,271,707.64
  4. Step 4: Simplify right side
    385,456,978,609.53x = 112,691,287,243,821,410,156,544
  5. Step 5: Solve for x
    x = 112,691,287,243,821,410,156,544/385,456,978,609.53
  6. Step 6: Final answer
    x = 292,357,626,135.96

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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.