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Finding the Third Proportional to 426,470 and 905,428

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Solution

The third proportional to 426,470 and 905,428 is: 1,922,291.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,470 : 905,428 = 905,428 : x
  2. Step 2: Convert to fraction form
    426,470/905,428 = 905,428/x
  3. Step 3: Cross multiply
    426,470x = 905,428 × 905,428
  4. Step 4: Simplify right side
    426,470x = 819,799,863,184
  5. Step 5: Solve for x
    x = 819,799,863,184/426,470
  6. Step 6: Final answer
    x = 1,922,291.99

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.