Home / 647,215,049.06-970,716,285.39-278,650,775.65

Finding the Fourth Proportional to 647,215,049.06, 970,716,285.39 and 278,650,775.65

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Solution

The fourth proportional to 647,215,049.06, 970,716,285.39 and 278,650,775.65 is: 417,930,402.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,215,049.06 : 970,716,285.39 = 278,650,775.65 : x
  2. Step 2: Convert to fraction form
    647,215,049.06/970,716,285.39 = 278,650,775.65/x
  3. Step 3: Cross multiply
    647,215,049.06x = 970,716,285.39 × 278,650,775.65
  4. Step 4: Simplify right side
    647,215,049.06x = 270,490,845,858,363,680
  5. Step 5: Solve for x
    x = 270,490,845,858,363,680/647,215,049.06
  6. Step 6: Final answer
    x = 417,930,402.34

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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.