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Finding the Fourth Proportional to 1,339,128.02, 1,848,290.92 and 880,284.98

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Solution

The fourth proportional to 1,339,128.02, 1,848,290.92 and 880,284.98 is: 1,214,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,128.02 : 1,848,290.92 = 880,284.98 : x
  2. Step 2: Convert to fraction form
    1,339,128.02/1,848,290.92 = 880,284.98/x
  3. Step 3: Cross multiply
    1,339,128.02x = 1,848,290.92 × 880,284.98
  4. Step 4: Simplify right side
    1,339,128.02x = 1,627,022,735,546.38
  5. Step 5: Solve for x
    x = 1,627,022,735,546.38/1,339,128.02
  6. Step 6: Final answer
    x = 1,214,986.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.