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Finding the Fourth Proportional to 1,361,579.34, 1,878,993.45 and 749,789.01

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Solution

The fourth proportional to 1,361,579.34, 1,878,993.45 and 749,789.01 is: 1,034,716.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361,579.34 : 1,878,993.45 = 749,789.01 : x
  2. Step 2: Convert to fraction form
    1,361,579.34/1,878,993.45 = 749,789.01/x
  3. Step 3: Cross multiply
    1,361,579.34x = 1,878,993.45 × 749,789.01
  4. Step 4: Simplify right side
    1,361,579.34x = 1,408,848,638,671.98
  5. Step 5: Solve for x
    x = 1,408,848,638,671.98/1,361,579.34
  6. Step 6: Final answer
    x = 1,034,716.52

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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.