Home / 387,086,815.40-579,833,960.70-266,054,930.60

Finding the Fourth Proportional to 387,086,815.40, 579,833,960.70 and 266,054,930.60

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Solution

The fourth proportional to 387,086,815.40, 579,833,960.70 and 266,054,930.60 is: 398,535,103.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,086,815.40 : 579,833,960.70 = 266,054,930.60 : x
  2. Step 2: Convert to fraction form
    387,086,815.40/579,833,960.70 = 266,054,930.60/x
  3. Step 3: Cross multiply
    387,086,815.40x = 579,833,960.70 × 266,054,930.60
  4. Step 4: Simplify right side
    387,086,815.40x = 154,267,684,173,561,632
  5. Step 5: Solve for x
    x = 154,267,684,173,561,632/387,086,815.40
  6. Step 6: Final answer
    x = 398,535,103.85

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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.