Home / 809,444.80-1,117,180.05-482,778.78

Finding the Fourth Proportional to 809,444.80, 1,117,180.05 and 482,778.78

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Solution

The fourth proportional to 809,444.80, 1,117,180.05 and 482,778.78 is: 666,321.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,444.80 : 1,117,180.05 = 482,778.78 : x
  2. Step 2: Convert to fraction form
    809,444.80/1,117,180.05 = 482,778.78/x
  3. Step 3: Cross multiply
    809,444.80x = 1,117,180.05 × 482,778.78
  4. Step 4: Simplify right side
    809,444.80x = 539,350,821,863.63
  5. Step 5: Solve for x
    x = 539,350,821,863.63/809,444.80
  6. Step 6: Final answer
    x = 666,321.93

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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.