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Finding the Fourth Proportional to 702,725,131.50, 969,760,662.22 and 389,506,403.22

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Solution

The fourth proportional to 702,725,131.50, 969,760,662.22 and 389,506,403.22 is: 537,518,825.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,725,131.50 : 969,760,662.22 = 389,506,403.22 : x
  2. Step 2: Convert to fraction form
    702,725,131.50/969,760,662.22 = 389,506,403.22/x
  3. Step 3: Cross multiply
    702,725,131.50x = 969,760,662.22 × 389,506,403.22
  4. Step 4: Simplify right side
    702,725,131.50x = 377,727,987,525,557,568
  5. Step 5: Solve for x
    x = 377,727,987,525,557,568/702,725,131.50
  6. Step 6: Final answer
    x = 537,518,825.77

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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.