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Finding the Third Proportional to 289,198,687 and 440,574,329

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Solution

The third proportional to 289,198,687 and 440,574,329 is: 671,184,718.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,198,687 : 440,574,329 = 440,574,329 : x
  2. Step 2: Convert to fraction form
    289,198,687/440,574,329 = 440,574,329/x
  3. Step 3: Cross multiply
    289,198,687x = 440,574,329 × 440,574,329
  4. Step 4: Simplify right side
    289,198,687x = 194,105,739,373,800,256
  5. Step 5: Solve for x
    x = 194,105,739,373,800,256/289,198,687
  6. Step 6: Final answer
    x = 671,184,718.67

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.