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Finding the Third Proportional to 426,554 and 987,490

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Solution

The third proportional to 426,554 and 987,490 is: 2,286,079.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,554 : 987,490 = 987,490 : x
  2. Step 2: Convert to fraction form
    426,554/987,490 = 987,490/x
  3. Step 3: Cross multiply
    426,554x = 987,490 × 987,490
  4. Step 4: Simplify right side
    426,554x = 975,136,500,100
  5. Step 5: Solve for x
    x = 975,136,500,100/426,554
  6. Step 6: Final answer
    x = 2,286,079.84

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.