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Finding the Third Proportional to 787,488 and 1,221,689.25

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Solution

The third proportional to 787,488 and 1,221,689.25 is: 1,895,298.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,488 : 1,221,689.25 = 1,221,689.25 : x
  2. Step 2: Convert to fraction form
    787,488/1,221,689.25 = 1,221,689.25/x
  3. Step 3: Cross multiply
    787,488x = 1,221,689.25 × 1,221,689.25
  4. Step 4: Simplify right side
    787,488x = 1,492,524,623,565.56
  5. Step 5: Solve for x
    x = 1,492,524,623,565.56/787,488
  6. Step 6: Final answer
    x = 1,895,298.24

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.