Home / 1,118,739.60-1,678,352.40-408,766.50

Finding the Fourth Proportional to 1,118,739.60, 1,678,352.40 and 408,766.50

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Solution

The fourth proportional to 1,118,739.60, 1,678,352.40 and 408,766.50 is: 613,238.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,739.60 : 1,678,352.40 = 408,766.50 : x
  2. Step 2: Convert to fraction form
    1,118,739.60/1,678,352.40 = 408,766.50/x
  3. Step 3: Cross multiply
    1,118,739.60x = 1,678,352.40 × 408,766.50
  4. Step 4: Simplify right side
    1,118,739.60x = 686,054,236,314.60
  5. Step 5: Solve for x
    x = 686,054,236,314.60/1,118,739.60
  6. Step 6: Final answer
    x = 613,238.54

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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.