Home / 777,803.50-1,073,369.55-420,107.50

Finding the Fourth Proportional to 777,803.50, 1,073,369.55 and 420,107.50

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Solution

The fourth proportional to 777,803.50, 1,073,369.55 and 420,107.50 is: 579,748.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,803.50 : 1,073,369.55 = 420,107.50 : x
  2. Step 2: Convert to fraction form
    777,803.50/1,073,369.55 = 420,107.50/x
  3. Step 3: Cross multiply
    777,803.50x = 1,073,369.55 × 420,107.50
  4. Step 4: Simplify right side
    777,803.50x = 450,930,598,226.63
  5. Step 5: Solve for x
    x = 450,930,598,226.63/777,803.50
  6. Step 6: Final answer
    x = 579,748.74

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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.