Home / 1,990,714.40-2,986,071.60-1,636,128.80

Finding the Fourth Proportional to 1,990,714.40, 2,986,071.60 and 1,636,128.80

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Solution

The fourth proportional to 1,990,714.40, 2,986,071.60 and 1,636,128.80 is: 2,454,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,714.40 : 2,986,071.60 = 1,636,128.80 : x
  2. Step 2: Convert to fraction form
    1,990,714.40/2,986,071.60 = 1,636,128.80/x
  3. Step 3: Cross multiply
    1,990,714.40x = 2,986,071.60 × 1,636,128.80
  4. Step 4: Simplify right side
    1,990,714.40x = 4,885,597,743,622.08
  5. Step 5: Solve for x
    x = 4,885,597,743,622.08/1,990,714.40
  6. Step 6: Final answer
    x = 2,454,193.20

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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.