Home / 809,218.71-1,117,169.28-487,008

Finding the Fourth Proportional to 809,218.71, 1,117,169.28 and 487,008

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Solution

The fourth proportional to 809,218.71, 1,117,169.28 and 487,008 is: 672,340.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,218.71 : 1,117,169.28 = 487,008 : x
  2. Step 2: Convert to fraction form
    809,218.71/1,117,169.28 = 487,008/x
  3. Step 3: Cross multiply
    809,218.71x = 1,117,169.28 × 487,008
  4. Step 4: Simplify right side
    809,218.71x = 544,070,376,714.24
  5. Step 5: Solve for x
    x = 544,070,376,714.24/809,218.71
  6. Step 6: Final answer
    x = 672,340.33

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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.