Home / 1,325,515,671-1,987,954,593.26-405,399,981.24

Finding the Fourth Proportional to 1,325,515,671, 1,987,954,593.26 and 405,399,981.24

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Solution

The fourth proportional to 1,325,515,671, 1,987,954,593.26 and 405,399,981.24 is: 608,002,434.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,515,671 : 1,987,954,593.26 = 405,399,981.24 : x
  2. Step 2: Convert to fraction form
    1,325,515,671/1,987,954,593.26 = 405,399,981.24/x
  3. Step 3: Cross multiply
    1,325,515,671x = 1,987,954,593.26 × 405,399,981.24
  4. Step 4: Simplify right side
    1,325,515,671x = 805,916,754,813,575,808
  5. Step 5: Solve for x
    x = 805,916,754,813,575,808/1,325,515,671
  6. Step 6: Final answer
    x = 608,002,434.41

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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.