Home / 387,086,817.40-579,833,963.70-266,054,932.60

Finding the Fourth Proportional to 387,086,817.40, 579,833,963.70 and 266,054,932.60

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Solution

The fourth proportional to 387,086,817.40, 579,833,963.70 and 266,054,932.60 is: 398,535,106.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,086,817.40 : 579,833,963.70 = 266,054,932.60 : x
  2. Step 2: Convert to fraction form
    387,086,817.40/579,833,963.70 = 266,054,932.60/x
  3. Step 3: Cross multiply
    387,086,817.40x = 579,833,963.70 × 266,054,932.60
  4. Step 4: Simplify right side
    387,086,817.40x = 154,267,686,131,394,368
  5. Step 5: Solve for x
    x = 154,267,686,131,394,368/387,086,817.40
  6. Step 6: Final answer
    x = 398,535,106.85

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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.