Home / 778,967,980.85-1,168,670,415.78-312,956,643.56

Finding the Fourth Proportional to 778,967,980.85, 1,168,670,415.78 and 312,956,643.56

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Solution

The fourth proportional to 778,967,980.85, 1,168,670,415.78 and 312,956,643.56 is: 469,522,727.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,967,980.85 : 1,168,670,415.78 = 312,956,643.56 : x
  2. Step 2: Convert to fraction form
    778,967,980.85/1,168,670,415.78 = 312,956,643.56/x
  3. Step 3: Cross multiply
    778,967,980.85x = 1,168,670,415.78 × 312,956,643.56
  4. Step 4: Simplify right side
    778,967,980.85x = 365,743,170,750,378,432
  5. Step 5: Solve for x
    x = 365,743,170,750,378,432/778,967,980.85
  6. Step 6: Final answer
    x = 469,522,727.18

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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.