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Finding the Third Proportional to 392,368 and 607,426

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Solution

The third proportional to 392,368 and 607,426 is: 940,357.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,368 : 607,426 = 607,426 : x
  2. Step 2: Convert to fraction form
    392,368/607,426 = 607,426/x
  3. Step 3: Cross multiply
    392,368x = 607,426 × 607,426
  4. Step 4: Simplify right side
    392,368x = 368,966,345,476
  5. Step 5: Solve for x
    x = 368,966,345,476/392,368
  6. Step 6: Final answer
    x = 940,357.89

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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.