Home / 403,353,742.40-605,030,613.60-394,395,790.40

Finding the Fourth Proportional to 403,353,742.40, 605,030,613.60 and 394,395,790.40

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Solution

The fourth proportional to 403,353,742.40, 605,030,613.60 and 394,395,790.40 is: 591,593,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,353,742.40 : 605,030,613.60 = 394,395,790.40 : x
  2. Step 2: Convert to fraction form
    403,353,742.40/605,030,613.60 = 394,395,790.40/x
  3. Step 3: Cross multiply
    403,353,742.40x = 605,030,613.60 × 394,395,790.40
  4. Step 4: Simplify right side
    403,353,742.40x = 238,621,527,066,968,992
  5. Step 5: Solve for x
    x = 238,621,527,066,968,992/403,353,742.40
  6. Step 6: Final answer
    x = 591,593,685.60

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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.