Home / 1,999,991.20-2,999,986.80-802,098.40

Finding the Fourth Proportional to 1,999,991.20, 2,999,986.80 and 802,098.40

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Solution

The fourth proportional to 1,999,991.20, 2,999,986.80 and 802,098.40 is: 1,203,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999,991.20 : 2,999,986.80 = 802,098.40 : x
  2. Step 2: Convert to fraction form
    1,999,991.20/2,999,986.80 = 802,098.40/x
  3. Step 3: Cross multiply
    1,999,991.20x = 2,999,986.80 × 802,098.40
  4. Step 4: Simplify right side
    1,999,991.20x = 2,406,284,612,301.12
  5. Step 5: Solve for x
    x = 2,406,284,612,301.12/1,999,991.20
  6. Step 6: Final answer
    x = 1,203,147.60

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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.