Home / 1,380,265.29-1,904,728.95-768,418.11

Finding the Fourth Proportional to 1,380,265.29, 1,904,728.95 and 768,418.11

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Solution

The fourth proportional to 1,380,265.29, 1,904,728.95 and 768,418.11 is: 1,060,396.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,265.29 : 1,904,728.95 = 768,418.11 : x
  2. Step 2: Convert to fraction form
    1,380,265.29/1,904,728.95 = 768,418.11/x
  3. Step 3: Cross multiply
    1,380,265.29x = 1,904,728.95 × 768,418.11
  4. Step 4: Simplify right side
    1,380,265.29x = 1,463,628,219,821.28
  5. Step 5: Solve for x
    x = 1,463,628,219,821.28/1,380,265.29
  6. Step 6: Final answer
    x = 1,060,396.31

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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.