Home / 428,839,112.64-641,635,393.68-254,055,955.44

Finding the Fourth Proportional to 428,839,112.64, 641,635,393.68 and 254,055,955.44

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Solution

The fourth proportional to 428,839,112.64, 641,635,393.68 and 254,055,955.44 is: 380,122,260.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,839,112.64 : 641,635,393.68 = 254,055,955.44 : x
  2. Step 2: Convert to fraction form
    428,839,112.64/641,635,393.68 = 254,055,955.44/x
  3. Step 3: Cross multiply
    428,839,112.64x = 641,635,393.68 × 254,055,955.44
  4. Step 4: Simplify right side
    428,839,112.64x = 163,011,292,985,492,928
  5. Step 5: Solve for x
    x = 163,011,292,985,492,928/428,839,112.64
  6. Step 6: Final answer
    x = 380,122,260.73

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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.