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Finding the Third Proportional to 9,939,490 and 21,295,556

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Solution

The third proportional to 9,939,490 and 21,295,556 is: 45,626,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939,490 : 21,295,556 = 21,295,556 : x
  2. Step 2: Convert to fraction form
    9,939,490/21,295,556 = 21,295,556/x
  3. Step 3: Cross multiply
    9,939,490x = 21,295,556 × 21,295,556
  4. Step 4: Simplify right side
    9,939,490x = 453,500,705,349,136
  5. Step 5: Solve for x
    x = 453,500,705,349,136/9,939,490
  6. Step 6: Final answer
    x = 45,626,154.40

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.