Home / 1,512,439,981.69-2,087,315,964.95-917,677,786.54

Finding the Fourth Proportional to 1,512,439,981.69, 2,087,315,964.95 and 917,677,786.54

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Solution

The fourth proportional to 1,512,439,981.69, 2,087,315,964.95 and 917,677,786.54 is: 1,266,485,624.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512,439,981.69 : 2,087,315,964.95 = 917,677,786.54 : x
  2. Step 2: Convert to fraction form
    1,512,439,981.69/2,087,315,964.95 = 917,677,786.54/x
  3. Step 3: Cross multiply
    1,512,439,981.69x = 2,087,315,964.95 × 917,677,786.54
  4. Step 4: Simplify right side
    1,512,439,981.69x = 1,915,483,494,524,084,736
  5. Step 5: Solve for x
    x = 1,915,483,494,524,084,736/1,512,439,981.69
  6. Step 6: Final answer
    x = 1,266,485,624.36

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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.