Home / 1,500,840,553.25-2,071,160,159.81-831,828,789.78

Finding the Fourth Proportional to 1,500,840,553.25, 2,071,160,159.81 and 831,828,789.78

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Solution

The fourth proportional to 1,500,840,553.25, 2,071,160,159.81 and 831,828,789.78 is: 1,147,923,838.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,840,553.25 : 2,071,160,159.81 = 831,828,789.78 : x
  2. Step 2: Convert to fraction form
    1,500,840,553.25/2,071,160,159.81 = 831,828,789.78/x
  3. Step 3: Cross multiply
    1,500,840,553.25x = 2,071,160,159.81 × 831,828,789.78
  4. Step 4: Simplify right side
    1,500,840,553.25x = 1,722,850,649,171,144,448
  5. Step 5: Solve for x
    x = 1,722,850,649,171,144,448/1,500,840,553.25
  6. Step 6: Final answer
    x = 1,147,923,838.71

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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.