Home / 1,991,735,792.15-2,987,398,953.69-663,620,384.89

Finding the Fourth Proportional to 1,991,735,792.15, 2,987,398,953.69 and 663,620,384.89

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Solution

The fourth proportional to 1,991,735,792.15, 2,987,398,953.69 and 663,620,384.89 is: 995,362,362.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,735,792.15 : 2,987,398,953.69 = 663,620,384.89 : x
  2. Step 2: Convert to fraction form
    1,991,735,792.15/2,987,398,953.69 = 663,620,384.89/x
  3. Step 3: Cross multiply
    1,991,735,792.15x = 2,987,398,953.69 × 663,620,384.89
  4. Step 4: Simplify right side
    1,991,735,792.15x = 1,982,498,843,467,741,184
  5. Step 5: Solve for x
    x = 1,982,498,843,467,741,184/1,991,735,792.15
  6. Step 6: Final answer
    x = 995,362,362.46

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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.