Home / 2,158,075.27-2,978,144.03-1,191,205.81

Finding the Fourth Proportional to 2,158,075.27, 2,978,144.03 and 1,191,205.81

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Solution

The fourth proportional to 2,158,075.27, 2,978,144.03 and 1,191,205.81 is: 1,643,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,075.27 : 2,978,144.03 = 1,191,205.81 : x
  2. Step 2: Convert to fraction form
    2,158,075.27/2,978,144.03 = 1,191,205.81/x
  3. Step 3: Cross multiply
    2,158,075.27x = 2,978,144.03 × 1,191,205.81
  4. Step 4: Simplify right side
    2,158,075.27x = 3,547,582,467,085.47
  5. Step 5: Solve for x
    x = 3,547,582,467,085.47/2,158,075.27
  6. Step 6: Final answer
    x = 1,643,864.10

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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.