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Finding the Third Proportional to 640,518,628 and 1,398,485,960

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Solution

The third proportional to 640,518,628 and 1,398,485,960 is: 3,053,405,310.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,518,628 : 1,398,485,960 = 1,398,485,960 : x
  2. Step 2: Convert to fraction form
    640,518,628/1,398,485,960 = 1,398,485,960/x
  3. Step 3: Cross multiply
    640,518,628x = 1,398,485,960 × 1,398,485,960
  4. Step 4: Simplify right side
    640,518,628x = 1,955,762,980,317,121,536
  5. Step 5: Solve for x
    x = 1,955,762,980,317,121,536/640,518,628
  6. Step 6: Final answer
    x = 3,053,405,310.67

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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.