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Finding the Third Proportional to 356,603 and 553,948

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Solution

The third proportional to 356,603 and 553,948 is: 860,504.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,603 : 553,948 = 553,948 : x
  2. Step 2: Convert to fraction form
    356,603/553,948 = 553,948/x
  3. Step 3: Cross multiply
    356,603x = 553,948 × 553,948
  4. Step 4: Simplify right side
    356,603x = 306,858,386,704
  5. Step 5: Solve for x
    x = 306,858,386,704/356,603
  6. Step 6: Final answer
    x = 860,504.22

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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.