Home / 1,325,515,670-1,987,954,591.76-405,399,980.24

Finding the Fourth Proportional to 1,325,515,670, 1,987,954,591.76 and 405,399,980.24

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Solution

The fourth proportional to 1,325,515,670, 1,987,954,591.76 and 405,399,980.24 is: 608,002,432.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,515,670 : 1,987,954,591.76 = 405,399,980.24 : x
  2. Step 2: Convert to fraction form
    1,325,515,670/1,987,954,591.76 = 405,399,980.24/x
  3. Step 3: Cross multiply
    1,325,515,670x = 1,987,954,591.76 × 405,399,980.24
  4. Step 4: Simplify right side
    1,325,515,670x = 805,916,752,217,521,280
  5. Step 5: Solve for x
    x = 805,916,752,217,521,280/1,325,515,670
  6. Step 6: Final answer
    x = 608,002,432.91

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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.