Home / 712,179,216.80-1,068,268,825.20-647,555,991.20

Finding the Fourth Proportional to 712,179,216.80, 1,068,268,825.20 and 647,555,991.20

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Solution

The fourth proportional to 712,179,216.80, 1,068,268,825.20 and 647,555,991.20 is: 971,333,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,179,216.80 : 1,068,268,825.20 = 647,555,991.20 : x
  2. Step 2: Convert to fraction form
    712,179,216.80/1,068,268,825.20 = 647,555,991.20/x
  3. Step 3: Cross multiply
    712,179,216.80x = 1,068,268,825.20 × 647,555,991.20
  4. Step 4: Simplify right side
    712,179,216.80x = 691,763,877,970,445,568
  5. Step 5: Solve for x
    x = 691,763,877,970,445,568/712,179,216.80
  6. Step 6: Final answer
    x = 971,333,986.80

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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.