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Finding the Third Proportional to 427,558,421 and 660,972,072

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Solution

The third proportional to 427,558,421 and 660,972,072 is: 1,021,811,426.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,558,421 : 660,972,072 = 660,972,072 : x
  2. Step 2: Convert to fraction form
    427,558,421/660,972,072 = 660,972,072/x
  3. Step 3: Cross multiply
    427,558,421x = 660,972,072 × 660,972,072
  4. Step 4: Simplify right side
    427,558,421x = 436,884,079,963,973,184
  5. Step 5: Solve for x
    x = 436,884,079,963,973,184/427,558,421
  6. Step 6: Final answer
    x = 1,021,811,426.24

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.