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Finding the Third Proportional to 868,139.69 and 1,289,616.93

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Solution

The third proportional to 868,139.69 and 1,289,616.93 is: 1,915,719.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,139.69 : 1,289,616.93 = 1,289,616.93 : x
  2. Step 2: Convert to fraction form
    868,139.69/1,289,616.93 = 1,289,616.93/x
  3. Step 3: Cross multiply
    868,139.69x = 1,289,616.93 × 1,289,616.93
  4. Step 4: Simplify right side
    868,139.69x = 1,663,111,823,762.25
  5. Step 5: Solve for x
    x = 1,663,111,823,762.25/868,139.69
  6. Step 6: Final answer
    x = 1,915,719.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.