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Finding the Third Proportional to 512,689.50 and 1,121,913

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Solution

The third proportional to 512,689.50 and 1,121,913 is: 2,455,070.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,689.50 : 1,121,913 = 1,121,913 : x
  2. Step 2: Convert to fraction form
    512,689.50/1,121,913 = 1,121,913/x
  3. Step 3: Cross multiply
    512,689.50x = 1,121,913 × 1,121,913
  4. Step 4: Simplify right side
    512,689.50x = 1,258,688,779,569
  5. Step 5: Solve for x
    x = 1,258,688,779,569/512,689.50
  6. Step 6: Final answer
    x = 2,455,070.33

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.