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Finding the Fourth Proportional to 1,230,940, 1,698,755.88 and 694,396

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Solution

The fourth proportional to 1,230,940, 1,698,755.88 and 694,396 is: 958,299.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,940 : 1,698,755.88 = 694,396 : x
  2. Step 2: Convert to fraction form
    1,230,940/1,698,755.88 = 694,396/x
  3. Step 3: Cross multiply
    1,230,940x = 1,698,755.88 × 694,396
  4. Step 4: Simplify right side
    1,230,940x = 1,179,609,288,048.48
  5. Step 5: Solve for x
    x = 1,179,609,288,048.48/1,230,940
  6. Step 6: Final answer
    x = 958,299.58

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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.