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Finding the Third Proportional to 358,958,608 and 780,810,478

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Solution

The third proportional to 358,958,608 and 780,810,478 is: 1,698,427,030.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,958,608 : 780,810,478 = 780,810,478 : x
  2. Step 2: Convert to fraction form
    358,958,608/780,810,478 = 780,810,478/x
  3. Step 3: Cross multiply
    358,958,608x = 780,810,478 × 780,810,478
  4. Step 4: Simplify right side
    358,958,608x = 609,665,002,554,588,544
  5. Step 5: Solve for x
    x = 609,665,002,554,588,544/358,958,608
  6. Step 6: Final answer
    x = 1,698,427,030.21

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.