Home / 1,213,560.70-1,821,838.65-764,280.70

Finding the Fourth Proportional to 1,213,560.70, 1,821,838.65 and 764,280.70

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Solution

The fourth proportional to 1,213,560.70, 1,821,838.65 and 764,280.70 is: 1,147,364.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,560.70 : 1,821,838.65 = 764,280.70 : x
  2. Step 2: Convert to fraction form
    1,213,560.70/1,821,838.65 = 764,280.70/x
  3. Step 3: Cross multiply
    1,213,560.70x = 1,821,838.65 × 764,280.70
  4. Step 4: Simplify right side
    1,213,560.70x = 1,392,396,118,709.06
  5. Step 5: Solve for x
    x = 1,392,396,118,709.06/1,213,560.70
  6. Step 6: Final answer
    x = 1,147,364.21

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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.