Home / 1,098,579.60-1,647,869.40-389,408.40

Finding the Fourth Proportional to 1,098,579.60, 1,647,869.40 and 389,408.40

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Solution

The fourth proportional to 1,098,579.60, 1,647,869.40 and 389,408.40 is: 584,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,579.60 : 1,647,869.40 = 389,408.40 : x
  2. Step 2: Convert to fraction form
    1,098,579.60/1,647,869.40 = 389,408.40/x
  3. Step 3: Cross multiply
    1,098,579.60x = 1,647,869.40 × 389,408.40
  4. Step 4: Simplify right side
    1,098,579.60x = 641,694,186,462.96
  5. Step 5: Solve for x
    x = 641,694,186,462.96/1,098,579.60
  6. Step 6: Final answer
    x = 584,112.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.