Home / 816,978.72-1,126,970.46-490,207.26

Finding the Fourth Proportional to 816,978.72, 1,126,970.46 and 490,207.26

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Solution

The fourth proportional to 816,978.72, 1,126,970.46 and 490,207.26 is: 676,209.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,978.72 : 1,126,970.46 = 490,207.26 : x
  2. Step 2: Convert to fraction form
    816,978.72/1,126,970.46 = 490,207.26/x
  3. Step 3: Cross multiply
    816,978.72x = 1,126,970.46 × 490,207.26
  4. Step 4: Simplify right side
    816,978.72x = 552,449,101,297.54
  5. Step 5: Solve for x
    x = 552,449,101,297.54/816,978.72
  6. Step 6: Final answer
    x = 676,209.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.