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Finding the Third Proportional to 356,597 and 553,939

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Solution

The third proportional to 356,597 and 553,939 is: 860,490.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,597 : 553,939 = 553,939 : x
  2. Step 2: Convert to fraction form
    356,597/553,939 = 553,939/x
  3. Step 3: Cross multiply
    356,597x = 553,939 × 553,939
  4. Step 4: Simplify right side
    356,597x = 306,848,415,721
  5. Step 5: Solve for x
    x = 306,848,415,721/356,597
  6. Step 6: Final answer
    x = 860,490.74

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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.