Home / 821,172.90-1,231,289.01-252,406.02

Finding the Fourth Proportional to 821,172.90, 1,231,289.01 and 252,406.02

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Solution

The fourth proportional to 821,172.90, 1,231,289.01 and 252,406.02 is: 378,464.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,172.90 : 1,231,289.01 = 252,406.02 : x
  2. Step 2: Convert to fraction form
    821,172.90/1,231,289.01 = 252,406.02/x
  3. Step 3: Cross multiply
    821,172.90x = 1,231,289.01 × 252,406.02
  4. Step 4: Simplify right side
    821,172.90x = 310,784,758,483.84
  5. Step 5: Solve for x
    x = 310,784,758,483.84/821,172.90
  6. Step 6: Final answer
    x = 378,464.46

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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.