Home / 856,978.20-1,285,467.30-542,827.80

Finding the Fourth Proportional to 856,978.20, 1,285,467.30 and 542,827.80

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Solution

The fourth proportional to 856,978.20, 1,285,467.30 and 542,827.80 is: 814,241.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,978.20 : 1,285,467.30 = 542,827.80 : x
  2. Step 2: Convert to fraction form
    856,978.20/1,285,467.30 = 542,827.80/x
  3. Step 3: Cross multiply
    856,978.20x = 1,285,467.30 × 542,827.80
  4. Step 4: Simplify right side
    856,978.20x = 697,787,386,430.94
  5. Step 5: Solve for x
    x = 697,787,386,430.94/856,978.20
  6. Step 6: Final answer
    x = 814,241.70

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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.