Home / 685,474.95-1,028,422.62-306,714.50

Finding the Fourth Proportional to 685,474.95, 1,028,422.62 and 306,714.50

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Solution

The fourth proportional to 685,474.95, 1,028,422.62 and 306,714.50 is: 460,165.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,474.95 : 1,028,422.62 = 306,714.50 : x
  2. Step 2: Convert to fraction form
    685,474.95/1,028,422.62 = 306,714.50/x
  3. Step 3: Cross multiply
    685,474.95x = 1,028,422.62 × 306,714.50
  4. Step 4: Simplify right side
    685,474.95x = 315,432,123,006.30
  5. Step 5: Solve for x
    x = 315,432,123,006.30/685,474.95
  6. Step 6: Final answer
    x = 460,165.79

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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.