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Finding the Fourth Proportional to 668,917,762.56, 923,106,512.28 and 375,568,629.12

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Solution

The fourth proportional to 668,917,762.56, 923,106,512.28 and 375,568,629.12 is: 518,284,708.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,917,762.56 : 923,106,512.28 = 375,568,629.12 : x
  2. Step 2: Convert to fraction form
    668,917,762.56/923,106,512.28 = 375,568,629.12/x
  3. Step 3: Cross multiply
    668,917,762.56x = 923,106,512.28 × 375,568,629.12
  4. Step 4: Simplify right side
    668,917,762.56x = 346,689,847,348,744,064
  5. Step 5: Solve for x
    x = 346,689,847,348,744,064/668,917,762.56
  6. Step 6: Final answer
    x = 518,284,708.16

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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.