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Finding the Third Proportional to 677,986.88 and 920,790.28

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Solution

The third proportional to 677,986.88 and 920,790.28 is: 1,250,547.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,986.88 : 920,790.28 = 920,790.28 : x
  2. Step 2: Convert to fraction form
    677,986.88/920,790.28 = 920,790.28/x
  3. Step 3: Cross multiply
    677,986.88x = 920,790.28 × 920,790.28
  4. Step 4: Simplify right side
    677,986.88x = 847,854,742,044.45
  5. Step 5: Solve for x
    x = 847,854,742,044.45/677,986.88
  6. Step 6: Final answer
    x = 1,250,547.43

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.