Home / 1,102,994.15-1,521,895.79-643,900.37

Finding the Fourth Proportional to 1,102,994.15, 1,521,895.79 and 643,900.37

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Solution

The fourth proportional to 1,102,994.15, 1,521,895.79 and 643,900.37 is: 888,444.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102,994.15 : 1,521,895.79 = 643,900.37 : x
  2. Step 2: Convert to fraction form
    1,102,994.15/1,521,895.79 = 643,900.37/x
  3. Step 3: Cross multiply
    1,102,994.15x = 1,521,895.79 × 643,900.37
  4. Step 4: Simplify right side
    1,102,994.15x = 979,949,259,062.94
  5. Step 5: Solve for x
    x = 979,949,259,062.94/1,102,994.15
  6. Step 6: Final answer
    x = 888,444.66

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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.