Home / 638,498,111.78-957,287,512.64-392,346,182.82

Finding the Fourth Proportional to 638,498,111.78, 957,287,512.64 and 392,346,182.82

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Solution

The fourth proportional to 638,498,111.78, 957,287,512.64 and 392,346,182.82 is: 588,236,824.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,498,111.78 : 957,287,512.64 = 392,346,182.82 : x
  2. Step 2: Convert to fraction form
    638,498,111.78/957,287,512.64 = 392,346,182.82/x
  3. Step 3: Cross multiply
    638,498,111.78x = 957,287,512.64 × 392,346,182.82
  4. Step 4: Simplify right side
    638,498,111.78x = 375,588,101,442,179,840
  5. Step 5: Solve for x
    x = 375,588,101,442,179,840/638,498,111.78
  6. Step 6: Final answer
    x = 588,236,824.06

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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.