Home / 1,285,128.60-1,773,487.76-712,178.28

Finding the Fourth Proportional to 1,285,128.60, 1,773,487.76 and 712,178.28

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Solution

The fourth proportional to 1,285,128.60, 1,773,487.76 and 712,178.28 is: 982,811.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,128.60 : 1,773,487.76 = 712,178.28 : x
  2. Step 2: Convert to fraction form
    1,285,128.60/1,773,487.76 = 712,178.28/x
  3. Step 3: Cross multiply
    1,285,128.60x = 1,773,487.76 × 712,178.28
  4. Step 4: Simplify right side
    1,285,128.60x = 1,263,039,462,517.85
  5. Step 5: Solve for x
    x = 1,263,039,462,517.85/1,285,128.60
  6. Step 6: Final answer
    x = 982,811.73

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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.