Home / 1,212,904.30-1,819,356.45-764,131.90

Finding the Fourth Proportional to 1,212,904.30, 1,819,356.45 and 764,131.90

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Solution

The fourth proportional to 1,212,904.30, 1,819,356.45 and 764,131.90 is: 1,146,197.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,904.30 : 1,819,356.45 = 764,131.90 : x
  2. Step 2: Convert to fraction form
    1,212,904.30/1,819,356.45 = 764,131.90/x
  3. Step 3: Cross multiply
    1,212,904.30x = 1,819,356.45 × 764,131.90
  4. Step 4: Simplify right side
    1,212,904.30x = 1,390,228,300,915.76
  5. Step 5: Solve for x
    x = 1,390,228,300,915.76/1,212,904.30
  6. Step 6: Final answer
    x = 1,146,197.85

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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.