Home / 260,593,716.20-390,934,811.10-78,839,450.60

Finding the Fourth Proportional to 260,593,716.20, 390,934,811.10 and 78,839,450.60

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Solution

The fourth proportional to 260,593,716.20, 390,934,811.10 and 78,839,450.60 is: 118,272,559.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,593,716.20 : 390,934,811.10 = 78,839,450.60 : x
  2. Step 2: Convert to fraction form
    260,593,716.20/390,934,811.10 = 78,839,450.60/x
  3. Step 3: Cross multiply
    260,593,716.20x = 390,934,811.10 × 78,839,450.60
  4. Step 4: Simplify right side
    260,593,716.20x = 30,821,085,727,538,780
  5. Step 5: Solve for x
    x = 30,821,085,727,538,780/260,593,716.20
  6. Step 6: Final answer
    x = 118,272,559.20

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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.