Home / 939,109.83-1,295,962.38-509,383.77

Finding the Fourth Proportional to 939,109.83, 1,295,962.38 and 509,383.77

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Solution

The fourth proportional to 939,109.83, 1,295,962.38 and 509,383.77 is: 702,944.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,109.83 : 1,295,962.38 = 509,383.77 : x
  2. Step 2: Convert to fraction form
    939,109.83/1,295,962.38 = 509,383.77/x
  3. Step 3: Cross multiply
    939,109.83x = 1,295,962.38 × 509,383.77
  4. Step 4: Simplify right side
    939,109.83x = 660,142,202,902.57
  5. Step 5: Solve for x
    x = 660,142,202,902.57/939,109.83
  6. Step 6: Final answer
    x = 702,944.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.