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Finding the Third Proportional to 688,948.50 and 979,840.50

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Solution

The third proportional to 688,948.50 and 979,840.50 is: 1,393,554.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,948.50 : 979,840.50 = 979,840.50 : x
  2. Step 2: Convert to fraction form
    688,948.50/979,840.50 = 979,840.50/x
  3. Step 3: Cross multiply
    688,948.50x = 979,840.50 × 979,840.50
  4. Step 4: Simplify right side
    688,948.50x = 960,087,405,440.25
  5. Step 5: Solve for x
    x = 960,087,405,440.25/688,948.50
  6. Step 6: Final answer
    x = 1,393,554.68

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.