Home / 1,221,760,219.40-1,832,640,329.10-445,431,206.60

Finding the Fourth Proportional to 1,221,760,219.40, 1,832,640,329.10 and 445,431,206.60

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Solution

The fourth proportional to 1,221,760,219.40, 1,832,640,329.10 and 445,431,206.60 is: 668,146,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,760,219.40 : 1,832,640,329.10 = 445,431,206.60 : x
  2. Step 2: Convert to fraction form
    1,221,760,219.40/1,832,640,329.10 = 445,431,206.60/x
  3. Step 3: Cross multiply
    1,221,760,219.40x = 1,832,640,329.10 × 445,431,206.60
  4. Step 4: Simplify right side
    1,221,760,219.40x = 816,315,193,054,834,048
  5. Step 5: Solve for x
    x = 816,315,193,054,834,048/1,221,760,219.40
  6. Step 6: Final answer
    x = 668,146,809.90

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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.