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Finding the Third Proportional to 287,360 and 624,460

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Solution

The third proportional to 287,360 and 624,460 is: 1,357,009.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,360 : 624,460 = 624,460 : x
  2. Step 2: Convert to fraction form
    287,360/624,460 = 624,460/x
  3. Step 3: Cross multiply
    287,360x = 624,460 × 624,460
  4. Step 4: Simplify right side
    287,360x = 389,950,291,600
  5. Step 5: Solve for x
    x = 389,950,291,600/287,360
  6. Step 6: Final answer
    x = 1,357,009.65

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.