Home / 809,406.26-1,117,016.78-465,353.79

Finding the Fourth Proportional to 809,406.26, 1,117,016.78 and 465,353.79

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Solution

The fourth proportional to 809,406.26, 1,117,016.78 and 465,353.79 is: 642,209.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,406.26 : 1,117,016.78 = 465,353.79 : x
  2. Step 2: Convert to fraction form
    809,406.26/1,117,016.78 = 465,353.79/x
  3. Step 3: Cross multiply
    809,406.26x = 1,117,016.78 × 465,353.79
  4. Step 4: Simplify right side
    809,406.26x = 519,807,989,739.83
  5. Step 5: Solve for x
    x = 519,807,989,739.83/809,406.26
  6. Step 6: Final answer
    x = 642,209.01

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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.