Home / 1,212,945.60-1,820,730.60-764,173.20

Finding the Fourth Proportional to 1,212,945.60, 1,820,730.60 and 764,173.20

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Solution

The fourth proportional to 1,212,945.60, 1,820,730.60 and 764,173.20 is: 1,147,086.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,945.60 : 1,820,730.60 = 764,173.20 : x
  2. Step 2: Convert to fraction form
    1,212,945.60/1,820,730.60 = 764,173.20/x
  3. Step 3: Cross multiply
    1,212,945.60x = 1,820,730.60 × 764,173.20
  4. Step 4: Simplify right side
    1,212,945.60x = 1,391,353,528,939.92
  5. Step 5: Solve for x
    x = 1,391,353,528,939.92/1,212,945.60
  6. Step 6: Final answer
    x = 1,147,086.50

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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.