Home / 1,991,990.40-2,984,421.60-1,211,582.40

Finding the Fourth Proportional to 1,991,990.40, 2,984,421.60 and 1,211,582.40

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Solution

The fourth proportional to 1,991,990.40, 2,984,421.60 and 1,211,582.40 is: 1,815,205.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,990.40 : 2,984,421.60 = 1,211,582.40 : x
  2. Step 2: Convert to fraction form
    1,991,990.40/2,984,421.60 = 1,211,582.40/x
  3. Step 3: Cross multiply
    1,991,990.40x = 2,984,421.60 × 1,211,582.40
  4. Step 4: Simplify right side
    1,991,990.40x = 3,615,872,684,739.84
  5. Step 5: Solve for x
    x = 3,615,872,684,739.84/1,991,990.40
  6. Step 6: Final answer
    x = 1,815,205.88

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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.