Home / 780,965,939.44-1,077,730,038.88-428,547,826.56

Finding the Fourth Proportional to 780,965,939.44, 1,077,730,038.88 and 428,547,826.56

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Solution

The fourth proportional to 780,965,939.44, 1,077,730,038.88 and 428,547,826.56 is: 591,394,377.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,965,939.44 : 1,077,730,038.88 = 428,547,826.56 : x
  2. Step 2: Convert to fraction form
    780,965,939.44/1,077,730,038.88 = 428,547,826.56/x
  3. Step 3: Cross multiply
    780,965,939.44x = 1,077,730,038.88 × 428,547,826.56
  4. Step 4: Simplify right side
    780,965,939.44x = 461,858,865,780,448,320
  5. Step 5: Solve for x
    x = 461,858,865,780,448,320/780,965,939.44
  6. Step 6: Final answer
    x = 591,394,377.73

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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.