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Finding the Fourth Proportional to 705,794,237.10, 973,990,672.04 and 388,247,662.70

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Solution

The fourth proportional to 705,794,237.10, 973,990,672.04 and 388,247,662.70 is: 535,778,817.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,794,237.10 : 973,990,672.04 = 388,247,662.70 : x
  2. Step 2: Convert to fraction form
    705,794,237.10/973,990,672.04 = 388,247,662.70/x
  3. Step 3: Cross multiply
    705,794,237.10x = 973,990,672.04 × 388,247,662.70
  4. Step 4: Simplify right side
    705,794,237.10x = 378,149,601,911,132,224
  5. Step 5: Solve for x
    x = 378,149,601,911,132,224/705,794,237.10
  6. Step 6: Final answer
    x = 535,778,817.73

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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.