Home / 809,215.21-1,117,164.45-487,004.50

Finding the Fourth Proportional to 809,215.21, 1,117,164.45 and 487,004.50

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Solution

The fourth proportional to 809,215.21, 1,117,164.45 and 487,004.50 is: 672,335.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,215.21 : 1,117,164.45 = 487,004.50 : x
  2. Step 2: Convert to fraction form
    809,215.21/1,117,164.45 = 487,004.50/x
  3. Step 3: Cross multiply
    809,215.21x = 1,117,164.45 × 487,004.50
  4. Step 4: Simplify right side
    809,215.21x = 544,064,114,390.03
  5. Step 5: Solve for x
    x = 544,064,114,390.03/809,215.21
  6. Step 6: Final answer
    x = 672,335.50

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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.