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Finding the Third Proportional to 315,469.50 and 688,030.50

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Solution

The third proportional to 315,469.50 and 688,030.50 is: 1,500,576.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,469.50 : 688,030.50 = 688,030.50 : x
  2. Step 2: Convert to fraction form
    315,469.50/688,030.50 = 688,030.50/x
  3. Step 3: Cross multiply
    315,469.50x = 688,030.50 × 688,030.50
  4. Step 4: Simplify right side
    315,469.50x = 473,385,968,930.25
  5. Step 5: Solve for x
    x = 473,385,968,930.25/315,469.50
  6. Step 6: Final answer
    x = 1,500,576.03

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.