Home / 1,121,639,960.70-1,680,956,037.05-872,945,515.71

Finding the Fourth Proportional to 1,121,639,960.70, 1,680,956,037.05 and 872,945,515.71

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Solution

The fourth proportional to 1,121,639,960.70, 1,680,956,037.05 and 872,945,515.71 is: 1,308,247,821.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,639,960.70 : 1,680,956,037.05 = 872,945,515.71 : x
  2. Step 2: Convert to fraction form
    1,121,639,960.70/1,680,956,037.05 = 872,945,515.71/x
  3. Step 3: Cross multiply
    1,121,639,960.70x = 1,680,956,037.05 × 872,945,515.71
  4. Step 4: Simplify right side
    1,121,639,960.70x = 1,467,383,034,644,085,504
  5. Step 5: Solve for x
    x = 1,467,383,034,644,085,504/1,121,639,960.70
  6. Step 6: Final answer
    x = 1,308,247,821.10

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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.