Home / 781,629,818.52-1,078,667,891.47-424,412,649.97

Finding the Fourth Proportional to 781,629,818.52, 1,078,667,891.47 and 424,412,649.97

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Solution

The fourth proportional to 781,629,818.52, 1,078,667,891.47 and 424,412,649.97 is: 585,699,633.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,629,818.52 : 1,078,667,891.47 = 424,412,649.97 : x
  2. Step 2: Convert to fraction form
    781,629,818.52/1,078,667,891.47 = 424,412,649.97/x
  3. Step 3: Cross multiply
    781,629,818.52x = 1,078,667,891.47 × 424,412,649.97
  4. Step 4: Simplify right side
    781,629,818.52x = 457,800,298,256,335,104
  5. Step 5: Solve for x
    x = 457,800,298,256,335,104/781,629,818.52
  6. Step 6: Final answer
    x = 585,699,633.52

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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.