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Finding the Third Proportional to 553,666.50 and 867,393

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Solution

The third proportional to 553,666.50 and 867,393 is: 1,358,887.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,666.50 : 867,393 = 867,393 : x
  2. Step 2: Convert to fraction form
    553,666.50/867,393 = 867,393/x
  3. Step 3: Cross multiply
    553,666.50x = 867,393 × 867,393
  4. Step 4: Simplify right side
    553,666.50x = 752,370,616,449
  5. Step 5: Solve for x
    x = 752,370,616,449/553,666.50
  6. Step 6: Final answer
    x = 1,358,887.74

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.