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Finding the Third Proportional to 639,899,959.50 and 955,656,731.25

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Solution

The third proportional to 639,899,959.50 and 955,656,731.25 is: 1,427,222,762.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,899,959.50 : 955,656,731.25 = 955,656,731.25 : x
  2. Step 2: Convert to fraction form
    639,899,959.50/955,656,731.25 = 955,656,731.25/x
  3. Step 3: Cross multiply
    639,899,959.50x = 955,656,731.25 × 955,656,731.25
  4. Step 4: Simplify right side
    639,899,959.50x = 913,279,787,983,434,752
  5. Step 5: Solve for x
    x = 913,279,787,983,434,752/639,899,959.50
  6. Step 6: Final answer
    x = 1,427,222,762.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.