Home / 647,215,341.64-970,716,724.14-278,651,068.20

Finding the Fourth Proportional to 647,215,341.64, 970,716,724.14 and 278,651,068.20

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Solution

The fourth proportional to 647,215,341.64, 970,716,724.14 and 278,651,068.20 is: 417,930,841.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,215,341.64 : 970,716,724.14 = 278,651,068.20 : x
  2. Step 2: Convert to fraction form
    647,215,341.64/970,716,724.14 = 278,651,068.20/x
  3. Step 3: Cross multiply
    647,215,341.64x = 970,716,724.14 × 278,651,068.20
  4. Step 4: Simplify right side
    647,215,341.64x = 270,491,252,101,215,712
  5. Step 5: Solve for x
    x = 270,491,252,101,215,712/647,215,341.64
  6. Step 6: Final answer
    x = 417,930,841.10

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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.