Home / 1,919,939.20-2,879,131.20-657,116.80

Finding the Fourth Proportional to 1,919,939.20, 2,879,131.20 and 657,116.80

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Solution

The fourth proportional to 1,919,939.20, 2,879,131.20 and 657,116.80 is: 985,409.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,939.20 : 2,879,131.20 = 657,116.80 : x
  2. Step 2: Convert to fraction form
    1,919,939.20/2,879,131.20 = 657,116.80/x
  3. Step 3: Cross multiply
    1,919,939.20x = 2,879,131.20 × 657,116.80
  4. Step 4: Simplify right side
    1,919,939.20x = 1,891,925,480,924.16
  5. Step 5: Solve for x
    x = 1,891,925,480,924.16/1,919,939.20
  6. Step 6: Final answer
    x = 985,409.06

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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.