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Finding the Fourth Proportional to 1,321,238.70, 1,852,222.50 and 1,321,238.70

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Solution

The fourth proportional to 1,321,238.70, 1,852,222.50 and 1,321,238.70 is: 1,852,222.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,238.70 : 1,852,222.50 = 1,321,238.70 : x
  2. Step 2: Convert to fraction form
    1,321,238.70/1,852,222.50 = 1,321,238.70/x
  3. Step 3: Cross multiply
    1,321,238.70x = 1,852,222.50 × 1,321,238.70
  4. Step 4: Simplify right side
    1,321,238.70x = 2,447,228,048,010.75
  5. Step 5: Solve for x
    x = 2,447,228,048,010.75/1,321,238.70
  6. Step 6: Final answer
    x = 1,852,222.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.