Home / 726,199.60-1,002,085.20-420,214.96

Finding the Fourth Proportional to 726,199.60, 1,002,085.20 and 420,214.96

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Solution

The fourth proportional to 726,199.60, 1,002,085.20 and 420,214.96 is: 579,856.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,199.60 : 1,002,085.20 = 420,214.96 : x
  2. Step 2: Convert to fraction form
    726,199.60/1,002,085.20 = 420,214.96/x
  3. Step 3: Cross multiply
    726,199.60x = 1,002,085.20 × 420,214.96
  4. Step 4: Simplify right side
    726,199.60x = 421,091,192,234.59
  5. Step 5: Solve for x
    x = 421,091,192,234.59/726,199.60
  6. Step 6: Final answer
    x = 579,856.00

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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.