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Finding the Third Proportional to 840,276 and 1,257,480

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Solution

The third proportional to 840,276 and 1,257,480 is: 1,881,829.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,276 : 1,257,480 = 1,257,480 : x
  2. Step 2: Convert to fraction form
    840,276/1,257,480 = 1,257,480/x
  3. Step 3: Cross multiply
    840,276x = 1,257,480 × 1,257,480
  4. Step 4: Simplify right side
    840,276x = 1,581,255,950,400
  5. Step 5: Solve for x
    x = 1,581,255,950,400/840,276
  6. Step 6: Final answer
    x = 1,881,829.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.