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Finding the Third Proportional to 188,838,816 and 406,375,480

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Solution

The third proportional to 188,838,816 and 406,375,480 is: 874,507,869.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,838,816 : 406,375,480 = 406,375,480 : x
  2. Step 2: Convert to fraction form
    188,838,816/406,375,480 = 406,375,480/x
  3. Step 3: Cross multiply
    188,838,816x = 406,375,480 × 406,375,480
  4. Step 4: Simplify right side
    188,838,816x = 165,141,030,745,230,400
  5. Step 5: Solve for x
    x = 165,141,030,745,230,400/188,838,816
  6. Step 6: Final answer
    x = 874,507,869.96

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.