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Finding the Third Proportional to 425,629.69 and 890,686.13

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Solution

The third proportional to 425,629.69 and 890,686.13 is: 1,863,877.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,629.69 : 890,686.13 = 890,686.13 : x
  2. Step 2: Convert to fraction form
    425,629.69/890,686.13 = 890,686.13/x
  3. Step 3: Cross multiply
    425,629.69x = 890,686.13 × 890,686.13
  4. Step 4: Simplify right side
    425,629.69x = 793,321,773,267.52
  5. Step 5: Solve for x
    x = 793,321,773,267.52/425,629.69
  6. Step 6: Final answer
    x = 1,863,877.91

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.