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Finding the Third Proportional to 1,290,106,020 and 1,992,191,700

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Solution

The third proportional to 1,290,106,020 and 1,992,191,700 is: 3,076,357,840.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,106,020 : 1,992,191,700 = 1,992,191,700 : x
  2. Step 2: Convert to fraction form
    1,290,106,020/1,992,191,700 = 1,992,191,700/x
  3. Step 3: Cross multiply
    1,290,106,020x = 1,992,191,700 × 1,992,191,700
  4. Step 4: Simplify right side
    1,290,106,020x = 3,968,827,769,548,890,112
  5. Step 5: Solve for x
    x = 3,968,827,769,548,890,112/1,290,106,020
  6. Step 6: Final answer
    x = 3,076,357,840.38

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.