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Finding the Third Proportional to 4,322,420 and 9,315,196

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Solution

The third proportional to 4,322,420 and 9,315,196 is: 20,075,068.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,322,420 : 9,315,196 = 9,315,196 : x
  2. Step 2: Convert to fraction form
    4,322,420/9,315,196 = 9,315,196/x
  3. Step 3: Cross multiply
    4,322,420x = 9,315,196 × 9,315,196
  4. Step 4: Simplify right side
    4,322,420x = 86,772,876,518,416
  5. Step 5: Solve for x
    x = 86,772,876,518,416/4,322,420
  6. Step 6: Final answer
    x = 20,075,068.25

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.