Home / 320,467,629.48-480,634,182.81-90,382,905.72

Finding the Fourth Proportional to 320,467,629.48, 480,634,182.81 and 90,382,905.72

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Solution

The fourth proportional to 320,467,629.48, 480,634,182.81 and 90,382,905.72 is: 135,555,388.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,467,629.48 : 480,634,182.81 = 90,382,905.72 : x
  2. Step 2: Convert to fraction form
    320,467,629.48/480,634,182.81 = 90,382,905.72/x
  3. Step 3: Cross multiply
    320,467,629.48x = 480,634,182.81 × 90,382,905.72
  4. Step 4: Simplify right side
    320,467,629.48x = 43,441,114,030,725,472
  5. Step 5: Solve for x
    x = 43,441,114,030,725,472/320,467,629.48
  6. Step 6: Final answer
    x = 135,555,388.55

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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.