Home / 856,980.70-1,285,471.05-542,830.30

Finding the Fourth Proportional to 856,980.70, 1,285,471.05 and 542,830.30

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Solution

The fourth proportional to 856,980.70, 1,285,471.05 and 542,830.30 is: 814,245.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,980.70 : 1,285,471.05 = 542,830.30 : x
  2. Step 2: Convert to fraction form
    856,980.70/1,285,471.05 = 542,830.30/x
  3. Step 3: Cross multiply
    856,980.70x = 1,285,471.05 × 542,830.30
  4. Step 4: Simplify right side
    856,980.70x = 697,792,635,712.82
  5. Step 5: Solve for x
    x = 697,792,635,712.82/856,980.70
  6. Step 6: Final answer
    x = 814,245.45

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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.