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Finding the Fourth Proportional to 1,262,923.90, 1,895,583.50 and 781,696.03

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Solution

The fourth proportional to 1,262,923.90, 1,895,583.50 and 781,696.03 is: 1,173,285.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,923.90 : 1,895,583.50 = 781,696.03 : x
  2. Step 2: Convert to fraction form
    1,262,923.90/1,895,583.50 = 781,696.03/x
  3. Step 3: Cross multiply
    1,262,923.90x = 1,895,583.50 × 781,696.03
  4. Step 4: Simplify right side
    1,262,923.90x = 1,481,770,087,005.59
  5. Step 5: Solve for x
    x = 1,481,770,087,005.59/1,262,923.90
  6. Step 6: Final answer
    x = 1,173,285.34

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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.