Home / 885,905.70-1,328,858.55-511,491.30

Finding the Fourth Proportional to 885,905.70, 1,328,858.55 and 511,491.30

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Solution

The fourth proportional to 885,905.70, 1,328,858.55 and 511,491.30 is: 767,236.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,905.70 : 1,328,858.55 = 511,491.30 : x
  2. Step 2: Convert to fraction form
    885,905.70/1,328,858.55 = 511,491.30/x
  3. Step 3: Cross multiply
    885,905.70x = 1,328,858.55 × 511,491.30
  4. Step 4: Simplify right side
    885,905.70x = 679,699,587,255.62
  5. Step 5: Solve for x
    x = 679,699,587,255.62/885,905.70
  6. Step 6: Final answer
    x = 767,236.95

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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.