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Finding the Fourth Proportional to 629,857,009.60, 879,759,080 and 629,857,009.60

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Solution

The fourth proportional to 629,857,009.60, 879,759,080 and 629,857,009.60 is: 879,759,080

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,009.60 : 879,759,080 = 629,857,009.60 : x
  2. Step 2: Convert to fraction form
    629,857,009.60/879,759,080 = 629,857,009.60/x
  3. Step 3: Cross multiply
    629,857,009.60x = 879,759,080 × 629,857,009.60
  4. Step 4: Simplify right side
    629,857,009.60x = 554,122,423,297,247,168
  5. Step 5: Solve for x
    x = 554,122,423,297,247,168/629,857,009.60
  6. Step 6: Final answer
    x = 879,759,080

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.