Home / 728,719.70-1,093,079.55-678,953.30

Finding the Fourth Proportional to 728,719.70, 1,093,079.55 and 678,953.30

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Solution

The fourth proportional to 728,719.70, 1,093,079.55 and 678,953.30 is: 1,018,429.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,719.70 : 1,093,079.55 = 678,953.30 : x
  2. Step 2: Convert to fraction form
    728,719.70/1,093,079.55 = 678,953.30/x
  3. Step 3: Cross multiply
    728,719.70x = 1,093,079.55 × 678,953.30
  4. Step 4: Simplify right side
    728,719.70x = 742,149,967,635.02
  5. Step 5: Solve for x
    x = 742,149,967,635.02/728,719.70
  6. Step 6: Final answer
    x = 1,018,429.95

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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.