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Finding the Fourth Proportional to 777,672.63, 1,073,188.27 and 419,976.63

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Solution

The fourth proportional to 777,672.63, 1,073,188.27 and 419,976.63 is: 579,567.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,672.63 : 1,073,188.27 = 419,976.63 : x
  2. Step 2: Convert to fraction form
    777,672.63/1,073,188.27 = 419,976.63/x
  3. Step 3: Cross multiply
    777,672.63x = 1,073,188.27 × 419,976.63
  4. Step 4: Simplify right side
    777,672.63x = 450,713,992,990.13
  5. Step 5: Solve for x
    x = 450,713,992,990.13/777,672.63
  6. Step 6: Final answer
    x = 579,567.77

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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.