Home / 1,216,401.80-1,821,837.90-768,504.20

Finding the Fourth Proportional to 1,216,401.80, 1,821,837.90 and 768,504.20

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Solution

The fourth proportional to 1,216,401.80, 1,821,837.90 and 768,504.20 is: 1,151,009.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,401.80 : 1,821,837.90 = 768,504.20 : x
  2. Step 2: Convert to fraction form
    1,216,401.80/1,821,837.90 = 768,504.20/x
  3. Step 3: Cross multiply
    1,216,401.80x = 1,821,837.90 × 768,504.20
  4. Step 4: Simplify right side
    1,216,401.80x = 1,400,090,077,869.18
  5. Step 5: Solve for x
    x = 1,400,090,077,869.18/1,216,401.80
  6. Step 6: Final answer
    x = 1,151,009.54

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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.