Home / 1,212,858,845.12-1,673,746,324.20-655,941,892.76

Finding the Fourth Proportional to 1,212,858,845.12, 1,673,746,324.20 and 655,941,892.76

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Solution

The fourth proportional to 1,212,858,845.12, 1,673,746,324.20 and 655,941,892.76 is: 905,200,416.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,858,845.12 : 1,673,746,324.20 = 655,941,892.76 : x
  2. Step 2: Convert to fraction form
    1,212,858,845.12/1,673,746,324.20 = 655,941,892.76/x
  3. Step 3: Cross multiply
    1,212,858,845.12x = 1,673,746,324.20 × 655,941,892.76
  4. Step 4: Simplify right side
    1,212,858,845.12x = 1,097,880,331,895,840,640
  5. Step 5: Solve for x
    x = 1,097,880,331,895,840,640/1,212,858,845.12
  6. Step 6: Final answer
    x = 905,200,416.61

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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.