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Finding the Fourth Proportional to 629,857,346.60, 944,786,019.90 and 432,586,447.40

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Solution

The fourth proportional to 629,857,346.60, 944,786,019.90 and 432,586,447.40 is: 648,879,671.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,346.60 : 944,786,019.90 = 432,586,447.40 : x
  2. Step 2: Convert to fraction form
    629,857,346.60/944,786,019.90 = 432,586,447.40/x
  3. Step 3: Cross multiply
    629,857,346.60x = 944,786,019.90 × 432,586,447.40
  4. Step 4: Simplify right side
    629,857,346.60x = 408,701,627,901,726,656
  5. Step 5: Solve for x
    x = 408,701,627,901,726,656/629,857,346.60
  6. Step 6: Final answer
    x = 648,879,671.10

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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.