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Finding the Third Proportional to 840,316 and 1,270,478

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Solution

The third proportional to 840,316 and 1,270,478 is: 1,920,842.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,316 : 1,270,478 = 1,270,478 : x
  2. Step 2: Convert to fraction form
    840,316/1,270,478 = 1,270,478/x
  3. Step 3: Cross multiply
    840,316x = 1,270,478 × 1,270,478
  4. Step 4: Simplify right side
    840,316x = 1,614,114,348,484
  5. Step 5: Solve for x
    x = 1,614,114,348,484/840,316
  6. Step 6: Final answer
    x = 1,920,842.10

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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.