Home / 809,996.25-1,117,640.23-487,727.22

Finding the Fourth Proportional to 809,996.25, 1,117,640.23 and 487,727.22

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Solution

The fourth proportional to 809,996.25, 1,117,640.23 and 487,727.22 is: 672,970.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,996.25 : 1,117,640.23 = 487,727.22 : x
  2. Step 2: Convert to fraction form
    809,996.25/1,117,640.23 = 487,727.22/x
  3. Step 3: Cross multiply
    809,996.25x = 1,117,640.23 × 487,727.22
  4. Step 4: Simplify right side
    809,996.25x = 545,103,565,309.89
  5. Step 5: Solve for x
    x = 545,103,565,309.89/809,996.25
  6. Step 6: Final answer
    x = 672,970.48

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1.5x scale

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.