Home / 1,389,828,780.36-2,084,741,409.60-354,689,685.36

Finding the Fourth Proportional to 1,389,828,780.36, 2,084,741,409.60 and 354,689,685.36

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Solution

The fourth proportional to 1,389,828,780.36, 2,084,741,409.60 and 354,689,685.36 is: 532,034,078.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,828,780.36 : 2,084,741,409.60 = 354,689,685.36 : x
  2. Step 2: Convert to fraction form
    1,389,828,780.36/2,084,741,409.60 = 354,689,685.36/x
  3. Step 3: Cross multiply
    1,389,828,780.36x = 2,084,741,409.60 × 354,689,685.36
  4. Step 4: Simplify right side
    1,389,828,780.36x = 739,436,274,627,986,816
  5. Step 5: Solve for x
    x = 739,436,274,627,986,816/1,389,828,780.36
  6. Step 6: Final answer
    x = 532,034,078.64

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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.