Home / 319,647,138.56-479,470,941.12-77,310,275.84

Finding the Fourth Proportional to 319,647,138.56, 479,470,941.12 and 77,310,275.84

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Solution

The fourth proportional to 319,647,138.56, 479,470,941.12 and 77,310,275.84 is: 115,965,470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,647,138.56 : 479,470,941.12 = 77,310,275.84 : x
  2. Step 2: Convert to fraction form
    319,647,138.56/479,470,941.12 = 77,310,275.84/x
  3. Step 3: Cross multiply
    319,647,138.56x = 479,470,941.12 × 77,310,275.84
  4. Step 4: Simplify right side
    319,647,138.56x = 37,068,030,715,251,600
  5. Step 5: Solve for x
    x = 37,068,030,715,251,600/319,647,138.56
  6. Step 6: Final answer
    x = 115,965,470.18

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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.