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Finding the Third Proportional to 455,429.25 and 668,366.25

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Solution

The third proportional to 455,429.25 and 668,366.25 is: 980,862.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,429.25 : 668,366.25 = 668,366.25 : x
  2. Step 2: Convert to fraction form
    455,429.25/668,366.25 = 668,366.25/x
  3. Step 3: Cross multiply
    455,429.25x = 668,366.25 × 668,366.25
  4. Step 4: Simplify right side
    455,429.25x = 446,713,444,139.06
  5. Step 5: Solve for x
    x = 446,713,444,139.06/455,429.25
  6. Step 6: Final answer
    x = 980,862.44

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.