Home / 1,242,005.80-1,863,008.70-763,708.90

Finding the Fourth Proportional to 1,242,005.80, 1,863,008.70 and 763,708.90

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Solution

The fourth proportional to 1,242,005.80, 1,863,008.70 and 763,708.90 is: 1,145,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,005.80 : 1,863,008.70 = 763,708.90 : x
  2. Step 2: Convert to fraction form
    1,242,005.80/1,863,008.70 = 763,708.90/x
  3. Step 3: Cross multiply
    1,242,005.80x = 1,863,008.70 × 763,708.90
  4. Step 4: Simplify right side
    1,242,005.80x = 1,422,796,324,967.43
  5. Step 5: Solve for x
    x = 1,422,796,324,967.43/1,242,005.80
  6. Step 6: Final answer
    x = 1,145,563.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.