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Finding the Third Proportional to 309,139,668.75 and 666,705,526.50

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Solution

The third proportional to 309,139,668.75 and 666,705,526.50 is: 1,437,849,308.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,139,668.75 : 666,705,526.50 = 666,705,526.50 : x
  2. Step 2: Convert to fraction form
    309,139,668.75/666,705,526.50 = 666,705,526.50/x
  3. Step 3: Cross multiply
    309,139,668.75x = 666,705,526.50 × 666,705,526.50
  4. Step 4: Simplify right side
    309,139,668.75x = 444,496,259,065,642,176
  5. Step 5: Solve for x
    x = 444,496,259,065,642,176/309,139,668.75
  6. Step 6: Final answer
    x = 1,437,849,308.90

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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.