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Finding the Fourth Proportional to 1,212,469.02, 1,819,316.70 and 807,936.66

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Solution

The fourth proportional to 1,212,469.02, 1,819,316.70 and 807,936.66 is: 1,212,313.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,469.02 : 1,819,316.70 = 807,936.66 : x
  2. Step 2: Convert to fraction form
    1,212,469.02/1,819,316.70 = 807,936.66/x
  3. Step 3: Cross multiply
    1,212,469.02x = 1,819,316.70 × 807,936.66
  4. Step 4: Simplify right side
    1,212,469.02x = 1,469,892,658,080.22
  5. Step 5: Solve for x
    x = 1,469,892,658,080.22/1,212,469.02
  6. Step 6: Final answer
    x = 1,212,313.58

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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.