Home / 1,207,486,063.64-1,666,336,410.78-685,993,911.32

Finding the Fourth Proportional to 1,207,486,063.64, 1,666,336,410.78 and 685,993,911.32

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Solution

The fourth proportional to 1,207,486,063.64, 1,666,336,410.78 and 685,993,911.32 is: 946,674,803.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,486,063.64 : 1,666,336,410.78 = 685,993,911.32 : x
  2. Step 2: Convert to fraction form
    1,207,486,063.64/1,666,336,410.78 = 685,993,911.32/x
  3. Step 3: Cross multiply
    1,207,486,063.64x = 1,666,336,410.78 × 685,993,911.32
  4. Step 4: Simplify right side
    1,207,486,063.64x = 1,143,096,632,005,902,464
  5. Step 5: Solve for x
    x = 1,143,096,632,005,902,464/1,207,486,063.64
  6. Step 6: Final answer
    x = 946,674,803.48

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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.