Home / 1,388,921,286.12-1,915,839,529.83-824,006,217.30

Finding the Fourth Proportional to 1,388,921,286.12, 1,915,839,529.83 and 824,006,217.30

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Solution

The fourth proportional to 1,388,921,286.12, 1,915,839,529.83 and 824,006,217.30 is: 1,136,611,339.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,921,286.12 : 1,915,839,529.83 = 824,006,217.30 : x
  2. Step 2: Convert to fraction form
    1,388,921,286.12/1,915,839,529.83 = 824,006,217.30/x
  3. Step 3: Cross multiply
    1,388,921,286.12x = 1,915,839,529.83 × 824,006,217.30
  4. Step 4: Simplify right side
    1,388,921,286.12x = 1,578,663,683,929,028,608
  5. Step 5: Solve for x
    x = 1,578,663,683,929,028,608/1,388,921,286.12
  6. Step 6: Final answer
    x = 1,136,611,339.83

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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.