Home / 647,215,318.60-970,716,689.68-278,651,045.16

Finding the Fourth Proportional to 647,215,318.60, 970,716,689.68 and 278,651,045.16

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Solution

The fourth proportional to 647,215,318.60, 970,716,689.68 and 278,651,045.16 is: 417,930,806.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,215,318.60 : 970,716,689.68 = 278,651,045.16 : x
  2. Step 2: Convert to fraction form
    647,215,318.60/970,716,689.68 = 278,651,045.16/x
  3. Step 3: Cross multiply
    647,215,318.60x = 970,716,689.68 × 278,651,045.16
  4. Step 4: Simplify right side
    647,215,318.60x = 270,491,220,133,587,392
  5. Step 5: Solve for x
    x = 270,491,220,133,587,392/647,215,318.60
  6. Step 6: Final answer
    x = 417,930,806.58

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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.