Home / 777,799.50-1,073,364.03-420,103.50

Finding the Fourth Proportional to 777,799.50, 1,073,364.03 and 420,103.50

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Solution

The fourth proportional to 777,799.50, 1,073,364.03 and 420,103.50 is: 579,743.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,799.50 : 1,073,364.03 = 420,103.50 : x
  2. Step 2: Convert to fraction form
    777,799.50/1,073,364.03 = 420,103.50/x
  3. Step 3: Cross multiply
    777,799.50x = 1,073,364.03 × 420,103.50
  4. Step 4: Simplify right side
    777,799.50x = 450,923,985,777.11
  5. Step 5: Solve for x
    x = 450,923,985,777.11/777,799.50
  6. Step 6: Final answer
    x = 579,743.22

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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.