Home / 1,380,361.61-1,904,515.85-890,123.69

Finding the Fourth Proportional to 1,380,361.61, 1,904,515.85 and 890,123.69

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Solution

The fourth proportional to 1,380,361.61, 1,904,515.85 and 890,123.69 is: 1,228,123.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,361.61 : 1,904,515.85 = 890,123.69 : x
  2. Step 2: Convert to fraction form
    1,380,361.61/1,904,515.85 = 890,123.69/x
  3. Step 3: Cross multiply
    1,380,361.61x = 1,904,515.85 × 890,123.69
  4. Step 4: Simplify right side
    1,380,361.61x = 1,695,254,662,092.29
  5. Step 5: Solve for x
    x = 1,695,254,662,092.29/1,380,361.61
  6. Step 6: Final answer
    x = 1,228,123.60

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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.