Home / 864,314,274.72-1,296,474,736.32-209,264,209.68

Finding the Fourth Proportional to 864,314,274.72, 1,296,474,736.32 and 209,264,209.68

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Solution

The fourth proportional to 864,314,274.72, 1,296,474,736.32 and 209,264,209.68 is: 313,897,119.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,314,274.72 : 1,296,474,736.32 = 209,264,209.68 : x
  2. Step 2: Convert to fraction form
    864,314,274.72/1,296,474,736.32 = 209,264,209.68/x
  3. Step 3: Cross multiply
    864,314,274.72x = 1,296,474,736.32 × 209,264,209.68
  4. Step 4: Simplify right side
    864,314,274.72x = 271,305,761,066,091,200
  5. Step 5: Solve for x
    x = 271,305,761,066,091,200/864,314,274.72
  6. Step 6: Final answer
    x = 313,897,119.37

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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.