Home / 563,145.97-777,135.25-305,016.50

Finding the Fourth Proportional to 563,145.97, 777,135.25 and 305,016.50

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Solution

The fourth proportional to 563,145.97, 777,135.25 and 305,016.50 is: 420,919.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,145.97 : 777,135.25 = 305,016.50 : x
  2. Step 2: Convert to fraction form
    563,145.97/777,135.25 = 305,016.50/x
  3. Step 3: Cross multiply
    563,145.97x = 777,135.25 × 305,016.50
  4. Step 4: Simplify right side
    563,145.97x = 237,039,073,981.63
  5. Step 5: Solve for x
    x = 237,039,073,981.63/563,145.97
  6. Step 6: Final answer
    x = 420,919.42

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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.