Home / 780,965,751.24-1,077,729,780.24-428,547,639.60

Finding the Fourth Proportional to 780,965,751.24, 1,077,729,780.24 and 428,547,639.60

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Solution

The fourth proportional to 780,965,751.24, 1,077,729,780.24 and 428,547,639.60 is: 591,394,120.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,965,751.24 : 1,077,729,780.24 = 428,547,639.60 : x
  2. Step 2: Convert to fraction form
    780,965,751.24/1,077,729,780.24 = 428,547,639.60/x
  3. Step 3: Cross multiply
    780,965,751.24x = 1,077,729,780.24 × 428,547,639.60
  4. Step 4: Simplify right side
    780,965,751.24x = 461,858,553,448,478,720
  5. Step 5: Solve for x
    x = 461,858,553,448,478,720/780,965,751.24
  6. Step 6: Final answer
    x = 591,394,120.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.