Home / 3,120,245.80-4,680,368.70-1,918,270.60

Finding the Fourth Proportional to 3,120,245.80, 4,680,368.70 and 1,918,270.60

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Solution

The fourth proportional to 3,120,245.80, 4,680,368.70 and 1,918,270.60 is: 2,877,405.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,245.80 : 4,680,368.70 = 1,918,270.60 : x
  2. Step 2: Convert to fraction form
    3,120,245.80/4,680,368.70 = 1,918,270.60/x
  3. Step 3: Cross multiply
    3,120,245.80x = 4,680,368.70 × 1,918,270.60
  4. Step 4: Simplify right side
    3,120,245.80x = 8,978,213,674,370.22
  5. Step 5: Solve for x
    x = 8,978,213,674,370.22/3,120,245.80
  6. Step 6: Final answer
    x = 2,877,405.90

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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.