Home / 1,213,214.60-1,821,134.10-764,442.20

Finding the Fourth Proportional to 1,213,214.60, 1,821,134.10 and 764,442.20

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Solution

The fourth proportional to 1,213,214.60, 1,821,134.10 and 764,442.20 is: 1,147,490.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,214.60 : 1,821,134.10 = 764,442.20 : x
  2. Step 2: Convert to fraction form
    1,213,214.60/1,821,134.10 = 764,442.20/x
  3. Step 3: Cross multiply
    1,213,214.60x = 1,821,134.10 × 764,442.20
  4. Step 4: Simplify right side
    1,213,214.60x = 1,392,151,757,899.02
  5. Step 5: Solve for x
    x = 1,392,151,757,899.02/1,213,214.60
  6. Step 6: Final answer
    x = 1,147,490.11

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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.