Home / 792,720,007.20-1,189,080,010.80-721,294,336.80

Finding the Fourth Proportional to 792,720,007.20, 1,189,080,010.80 and 721,294,336.80

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Solution

The fourth proportional to 792,720,007.20, 1,189,080,010.80 and 721,294,336.80 is: 1,081,941,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,720,007.20 : 1,189,080,010.80 = 721,294,336.80 : x
  2. Step 2: Convert to fraction form
    792,720,007.20/1,189,080,010.80 = 721,294,336.80/x
  3. Step 3: Cross multiply
    792,720,007.20x = 1,189,080,010.80 × 721,294,336.80
  4. Step 4: Simplify right side
    792,720,007.20x = 857,676,677,792,122,752
  5. Step 5: Solve for x
    x = 857,676,677,792,122,752/792,720,007.20
  6. Step 6: Final answer
    x = 1,081,941,505.20

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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.