Home / 643,272,641.85-962,474,022.57-381,097,946.82

Finding the Fourth Proportional to 643,272,641.85, 962,474,022.57 and 381,097,946.82

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Solution

The fourth proportional to 643,272,641.85, 962,474,022.57 and 381,097,946.82 is: 570,204,373.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,272,641.85 : 962,474,022.57 = 381,097,946.82 : x
  2. Step 2: Convert to fraction form
    643,272,641.85/962,474,022.57 = 381,097,946.82/x
  3. Step 3: Cross multiply
    643,272,641.85x = 962,474,022.57 × 381,097,946.82
  4. Step 4: Simplify right side
    643,272,641.85x = 366,796,873,869,013,376
  5. Step 5: Solve for x
    x = 366,796,873,869,013,376/643,272,641.85
  6. Step 6: Final answer
    x = 570,204,373.71

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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.