Home / 1,389,621-2,069,247.27-1,338,547.80

Finding the Fourth Proportional to 1,389,621, 2,069,247.27 and 1,338,547.80

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Solution

The fourth proportional to 1,389,621, 2,069,247.27 and 1,338,547.80 is: 1,993,195.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,621 : 2,069,247.27 = 1,338,547.80 : x
  2. Step 2: Convert to fraction form
    1,389,621/2,069,247.27 = 1,338,547.80/x
  3. Step 3: Cross multiply
    1,389,621x = 2,069,247.27 × 1,338,547.80
  4. Step 4: Simplify right side
    1,389,621x = 2,769,786,380,914.51
  5. Step 5: Solve for x
    x = 2,769,786,380,914.51/1,389,621
  6. Step 6: Final answer
    x = 1,993,195.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.