Home / 1,378,558.35-1,902,128.94-805,487.76

Finding the Fourth Proportional to 1,378,558.35, 1,902,128.94 and 805,487.76

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Solution

The fourth proportional to 1,378,558.35, 1,902,128.94 and 805,487.76 is: 1,111,408.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,558.35 : 1,902,128.94 = 805,487.76 : x
  2. Step 2: Convert to fraction form
    1,378,558.35/1,902,128.94 = 805,487.76/x
  3. Step 3: Cross multiply
    1,378,558.35x = 1,902,128.94 × 805,487.76
  4. Step 4: Simplify right side
    1,378,558.35x = 1,532,141,579,111.77
  5. Step 5: Solve for x
    x = 1,532,141,579,111.77/1,378,558.35
  6. Step 6: Final answer
    x = 1,111,408.58

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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.