Home / 786,978,106.58-1,180,875,709.29-320,981,409.74

Finding the Fourth Proportional to 786,978,106.58, 1,180,875,709.29 and 320,981,409.74

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Solution

The fourth proportional to 786,978,106.58, 1,180,875,709.29 and 320,981,409.74 is: 481,638,747.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,978,106.58 : 1,180,875,709.29 = 320,981,409.74 : x
  2. Step 2: Convert to fraction form
    786,978,106.58/1,180,875,709.29 = 320,981,409.74/x
  3. Step 3: Cross multiply
    786,978,106.58x = 1,180,875,709.29 × 320,981,409.74
  4. Step 4: Simplify right side
    786,978,106.58x = 379,039,149,889,722,240
  5. Step 5: Solve for x
    x = 379,039,149,889,722,240/786,978,106.58
  6. Step 6: Final answer
    x = 481,638,747.92

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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.