Home / 1,285,138.72-1,773,470.64-712,177.12

Finding the Fourth Proportional to 1,285,138.72, 1,773,470.64 and 712,177.12

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Solution

The fourth proportional to 1,285,138.72, 1,773,470.64 and 712,177.12 is: 982,792.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,138.72 : 1,773,470.64 = 712,177.12 : x
  2. Step 2: Convert to fraction form
    1,285,138.72/1,773,470.64 = 712,177.12/x
  3. Step 3: Cross multiply
    1,285,138.72x = 1,773,470.64 × 712,177.12
  4. Step 4: Simplify right side
    1,285,138.72x = 1,263,025,212,799.76
  5. Step 5: Solve for x
    x = 1,263,025,212,799.76/1,285,138.72
  6. Step 6: Final answer
    x = 982,792.90

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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.