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Finding the Third Proportional to 423,873.50 and 640,130.25

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Solution

The third proportional to 423,873.50 and 640,130.25 is: 966,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,873.50 : 640,130.25 = 640,130.25 : x
  2. Step 2: Convert to fraction form
    423,873.50/640,130.25 = 640,130.25/x
  3. Step 3: Cross multiply
    423,873.50x = 640,130.25 × 640,130.25
  4. Step 4: Simplify right side
    423,873.50x = 409,766,736,965.06
  5. Step 5: Solve for x
    x = 409,766,736,965.06/423,873.50
  6. Step 6: Final answer
    x = 966,719.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.