Home / 1,389,190,969.80-2,081,994,864.30-1,064,465,209.80

Finding the Fourth Proportional to 1,389,190,969.80, 2,081,994,864.30 and 1,064,465,209.80

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Solution

The fourth proportional to 1,389,190,969.80, 2,081,994,864.30 and 1,064,465,209.80 is: 1,595,325,011.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,190,969.80 : 2,081,994,864.30 = 1,064,465,209.80 : x
  2. Step 2: Convert to fraction form
    1,389,190,969.80/2,081,994,864.30 = 1,064,465,209.80/x
  3. Step 3: Cross multiply
    1,389,190,969.80x = 2,081,994,864.30 × 1,064,465,209.80
  4. Step 4: Simplify right side
    1,389,190,969.80x = 2,216,211,100,029,621,760
  5. Step 5: Solve for x
    x = 2,216,211,100,029,621,760/1,389,190,969.80
  6. Step 6: Final answer
    x = 1,595,325,011.61

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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.