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Finding the Third Proportional to 870,700 and 1,319,191

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Solution

The third proportional to 870,700 and 1,319,191 is: 1,998,696.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,700 : 1,319,191 = 1,319,191 : x
  2. Step 2: Convert to fraction form
    870,700/1,319,191 = 1,319,191/x
  3. Step 3: Cross multiply
    870,700x = 1,319,191 × 1,319,191
  4. Step 4: Simplify right side
    870,700x = 1,740,264,894,481
  5. Step 5: Solve for x
    x = 1,740,264,894,481/870,700
  6. Step 6: Final answer
    x = 1,998,696.33

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.