Home / 643,272,643.35-962,474,024.82-381,097,948.32

Finding the Fourth Proportional to 643,272,643.35, 962,474,024.82 and 381,097,948.32

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Solution

The fourth proportional to 643,272,643.35, 962,474,024.82 and 381,097,948.32 is: 570,204,375.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,272,643.35 : 962,474,024.82 = 381,097,948.32 : x
  2. Step 2: Convert to fraction form
    643,272,643.35/962,474,024.82 = 381,097,948.32/x
  3. Step 3: Cross multiply
    643,272,643.35x = 962,474,024.82 × 381,097,948.32
  4. Step 4: Simplify right side
    643,272,643.35x = 366,796,876,170,194,752
  5. Step 5: Solve for x
    x = 366,796,876,170,194,752/643,272,643.35
  6. Step 6: Final answer
    x = 570,204,375.95

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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.