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Finding the Fourth Proportional to 395,736,013.60, 554,407,906.40 and 395,736,013.60

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Solution

The fourth proportional to 395,736,013.60, 554,407,906.40 and 395,736,013.60 is: 554,407,906.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,736,013.60 : 554,407,906.40 = 395,736,013.60 : x
  2. Step 2: Convert to fraction form
    395,736,013.60/554,407,906.40 = 395,736,013.60/x
  3. Step 3: Cross multiply
    395,736,013.60x = 554,407,906.40 × 395,736,013.60
  4. Step 4: Simplify right side
    395,736,013.60x = 219,399,174,787,057,920
  5. Step 5: Solve for x
    x = 219,399,174,787,057,920/395,736,013.60
  6. Step 6: Final answer
    x = 554,407,906.40

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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.