Home / 387,086,846.40-579,834,007.20-266,054,961.60

Finding the Fourth Proportional to 387,086,846.40, 579,834,007.20 and 266,054,961.60

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Solution

The fourth proportional to 387,086,846.40, 579,834,007.20 and 266,054,961.60 is: 398,535,150.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,086,846.40 : 579,834,007.20 = 266,054,961.60 : x
  2. Step 2: Convert to fraction form
    387,086,846.40/579,834,007.20 = 266,054,961.60/x
  3. Step 3: Cross multiply
    387,086,846.40x = 579,834,007.20 × 266,054,961.60
  4. Step 4: Simplify right side
    387,086,846.40x = 154,267,714,519,970,144
  5. Step 5: Solve for x
    x = 154,267,714,519,970,144/387,086,846.40
  6. Step 6: Final answer
    x = 398,535,150.33

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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.