Home / 856,981.20-1,285,471.80-542,830.80

Finding the Fourth Proportional to 856,981.20, 1,285,471.80 and 542,830.80

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Solution

The fourth proportional to 856,981.20, 1,285,471.80 and 542,830.80 is: 814,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,981.20 : 1,285,471.80 = 542,830.80 : x
  2. Step 2: Convert to fraction form
    856,981.20/1,285,471.80 = 542,830.80/x
  3. Step 3: Cross multiply
    856,981.20x = 1,285,471.80 × 542,830.80
  4. Step 4: Simplify right side
    856,981.20x = 697,793,685,571.44
  5. Step 5: Solve for x
    x = 697,793,685,571.44/856,981.20
  6. Step 6: Final answer
    x = 814,246.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.