Home / 869,244,971.36-1,199,870,080.92-516,820,121.31

Finding the Fourth Proportional to 869,244,971.36, 1,199,870,080.92 and 516,820,121.31

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Solution

The fourth proportional to 869,244,971.36, 1,199,870,080.92 and 516,820,121.31 is: 713,397,282.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,244,971.36 : 1,199,870,080.92 = 516,820,121.31 : x
  2. Step 2: Convert to fraction form
    869,244,971.36/1,199,870,080.92 = 516,820,121.31/x
  3. Step 3: Cross multiply
    869,244,971.36x = 1,199,870,080.92 × 516,820,121.31
  4. Step 4: Simplify right side
    869,244,971.36x = 620,117,000,777,313,920
  5. Step 5: Solve for x
    x = 620,117,000,777,313,920/869,244,971.36
  6. Step 6: Final answer
    x = 713,397,282.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.