Home / 428,581,067.66-642,802,732.81-117,616,042.88

Finding the Fourth Proportional to 428,581,067.66, 642,802,732.81 and 117,616,042.88

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Solution

The fourth proportional to 428,581,067.66, 642,802,732.81 and 117,616,042.88 is: 176,405,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,581,067.66 : 642,802,732.81 = 117,616,042.88 : x
  2. Step 2: Convert to fraction form
    428,581,067.66/642,802,732.81 = 117,616,042.88/x
  3. Step 3: Cross multiply
    428,581,067.66x = 642,802,732.81 × 117,616,042.88
  4. Step 4: Simplify right side
    428,581,067.66x = 75,603,913,785,562,128
  5. Step 5: Solve for x
    x = 75,603,913,785,562,128/428,581,067.66
  6. Step 6: Final answer
    x = 176,405,164.60

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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.