Home / 1,214,863,811,321-1,821,020,089,613.20-408,750,890,842.90

Finding the Fourth Proportional to 1,214,863,811,321, 1,821,020,089,613.20 and 408,750,890,842.90

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Solution

The fourth proportional to 1,214,863,811,321, 1,821,020,089,613.20 and 408,750,890,842.90 is: 612,697,140,976.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,863,811,321 : 1,821,020,089,613.20 = 408,750,890,842.90 : x
  2. Step 2: Convert to fraction form
    1,214,863,811,321/1,821,020,089,613.20 = 408,750,890,842.90/x
  3. Step 3: Cross multiply
    1,214,863,811,321x = 1,821,020,089,613.20 × 408,750,890,842.90
  4. Step 4: Simplify right side
    1,214,863,811,321x = 744,343,583,872,213,099,479,040
  5. Step 5: Solve for x
    x = 744,343,583,872,213,099,479,040/1,214,863,811,321
  6. Step 6: Final answer
    x = 612,697,140,976.52

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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.