Home / 2,157,215.09-2,976,869.78-1,190,332.80

Finding the Fourth Proportional to 2,157,215.09, 2,976,869.78 and 1,190,332.80

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Solution

The fourth proportional to 2,157,215.09, 2,976,869.78 and 1,190,332.80 is: 1,642,611.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157,215.09 : 2,976,869.78 = 1,190,332.80 : x
  2. Step 2: Convert to fraction form
    2,157,215.09/2,976,869.78 = 1,190,332.80/x
  3. Step 3: Cross multiply
    2,157,215.09x = 2,976,869.78 × 1,190,332.80
  4. Step 4: Simplify right side
    2,157,215.09x = 3,543,465,738,974.87
  5. Step 5: Solve for x
    x = 3,543,465,738,974.87/2,157,215.09
  6. Step 6: Final answer
    x = 1,642,611.24

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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.