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Finding the Third Proportional to 302,803 and 657,120

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Solution

The third proportional to 302,803 and 657,120 is: 1,426,031.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,803 : 657,120 = 657,120 : x
  2. Step 2: Convert to fraction form
    302,803/657,120 = 657,120/x
  3. Step 3: Cross multiply
    302,803x = 657,120 × 657,120
  4. Step 4: Simplify right side
    302,803x = 431,806,694,400
  5. Step 5: Solve for x
    x = 431,806,694,400/302,803
  6. Step 6: Final answer
    x = 1,426,031.76

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.