Home / 2,139,569,672.80-3,209,354,509.20-915,129,608.80

Finding the Fourth Proportional to 2,139,569,672.80, 3,209,354,509.20 and 915,129,608.80

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Solution

The fourth proportional to 2,139,569,672.80, 3,209,354,509.20 and 915,129,608.80 is: 1,372,694,413.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139,569,672.80 : 3,209,354,509.20 = 915,129,608.80 : x
  2. Step 2: Convert to fraction form
    2,139,569,672.80/3,209,354,509.20 = 915,129,608.80/x
  3. Step 3: Cross multiply
    2,139,569,672.80x = 3,209,354,509.20 × 915,129,608.80
  4. Step 4: Simplify right side
    2,139,569,672.80x = 2,936,975,336,504,711,680
  5. Step 5: Solve for x
    x = 2,936,975,336,504,711,680/2,139,569,672.80
  6. Step 6: Final answer
    x = 1,372,694,413.20

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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.