Home / 643,272,643.86-962,474,025.56-381,097,948.82

Finding the Fourth Proportional to 643,272,643.86, 962,474,025.56 and 381,097,948.82

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Solution

The fourth proportional to 643,272,643.86, 962,474,025.56 and 381,097,948.82 is: 570,204,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,272,643.86 : 962,474,025.56 = 381,097,948.82 : x
  2. Step 2: Convert to fraction form
    643,272,643.86/962,474,025.56 = 381,097,948.82/x
  3. Step 3: Cross multiply
    643,272,643.86x = 962,474,025.56 × 381,097,948.82
  4. Step 4: Simplify right side
    643,272,643.86x = 366,796,876,933,444,224
  5. Step 5: Solve for x
    x = 366,796,876,933,444,224/643,272,643.86
  6. Step 6: Final answer
    x = 570,204,376.69

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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.