Home / 643,272,642.35-962,474,023.32-381,097,947.32

Finding the Fourth Proportional to 643,272,642.35, 962,474,023.32 and 381,097,947.32

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Solution

The fourth proportional to 643,272,642.35, 962,474,023.32 and 381,097,947.32 is: 570,204,374.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,272,642.35 : 962,474,023.32 = 381,097,947.32 : x
  2. Step 2: Convert to fraction form
    643,272,642.35/962,474,023.32 = 381,097,947.32/x
  3. Step 3: Cross multiply
    643,272,642.35x = 962,474,023.32 × 381,097,947.32
  4. Step 4: Simplify right side
    643,272,642.35x = 366,796,874,636,073,856
  5. Step 5: Solve for x
    x = 366,796,874,636,073,856/643,272,642.35
  6. Step 6: Final answer
    x = 570,204,374.46

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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.