Home / 1,118,741.60-1,678,355.40-408,768.50

Finding the Fourth Proportional to 1,118,741.60, 1,678,355.40 and 408,768.50

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Solution

The fourth proportional to 1,118,741.60, 1,678,355.40 and 408,768.50 is: 613,241.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,741.60 : 1,678,355.40 = 408,768.50 : x
  2. Step 2: Convert to fraction form
    1,118,741.60/1,678,355.40 = 408,768.50/x
  3. Step 3: Cross multiply
    1,118,741.60x = 1,678,355.40 × 408,768.50
  4. Step 4: Simplify right side
    1,118,741.60x = 686,058,819,324.90
  5. Step 5: Solve for x
    x = 686,058,819,324.90/1,118,741.60
  6. Step 6: Final answer
    x = 613,241.54

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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.