Home / 990,830,429.10-1,486,245,643.65-664,313,078.70

Finding the Fourth Proportional to 990,830,429.10, 1,486,245,643.65 and 664,313,078.70

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Solution

The fourth proportional to 990,830,429.10, 1,486,245,643.65 and 664,313,078.70 is: 996,469,618.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,830,429.10 : 1,486,245,643.65 = 664,313,078.70 : x
  2. Step 2: Convert to fraction form
    990,830,429.10/1,486,245,643.65 = 664,313,078.70/x
  3. Step 3: Cross multiply
    990,830,429.10x = 1,486,245,643.65 × 664,313,078.70
  4. Step 4: Simplify right side
    990,830,429.10x = 987,332,419,237,594,752
  5. Step 5: Solve for x
    x = 987,332,419,237,594,752/990,830,429.10
  6. Step 6: Final answer
    x = 996,469,618.05

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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.