Home / 1,003,404.13-1,384,963.19-621,213.73

Finding the Fourth Proportional to 1,003,404.13, 1,384,963.19 and 621,213.73

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Solution

The fourth proportional to 1,003,404.13, 1,384,963.19 and 621,213.73 is: 857,439.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,003,404.13 : 1,384,963.19 = 621,213.73 : x
  2. Step 2: Convert to fraction form
    1,003,404.13/1,384,963.19 = 621,213.73/x
  3. Step 3: Cross multiply
    1,003,404.13x = 1,384,963.19 × 621,213.73
  4. Step 4: Simplify right side
    1,003,404.13x = 860,358,146,066.53
  5. Step 5: Solve for x
    x = 860,358,146,066.53/1,003,404.13
  6. Step 6: Final answer
    x = 857,439.31

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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.