Home / 647,376,222.78-893,448,420.90-396,647,009.10

Finding the Fourth Proportional to 647,376,222.78, 893,448,420.90 and 396,647,009.10

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Solution

The fourth proportional to 647,376,222.78, 893,448,420.90 and 396,647,009.10 is: 547,415,291.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,376,222.78 : 893,448,420.90 = 396,647,009.10 : x
  2. Step 2: Convert to fraction form
    647,376,222.78/893,448,420.90 = 396,647,009.10/x
  3. Step 3: Cross multiply
    647,376,222.78x = 893,448,420.90 × 396,647,009.10
  4. Step 4: Simplify right side
    647,376,222.78x = 354,383,643,935,102,912
  5. Step 5: Solve for x
    x = 354,383,643,935,102,912/647,376,222.78
  6. Step 6: Final answer
    x = 547,415,291.86

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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.