Home / 1,287,628.80-1,933,286.40-727,756.80

Finding the Fourth Proportional to 1,287,628.80, 1,933,286.40 and 727,756.80

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Solution

The fourth proportional to 1,287,628.80, 1,933,286.40 and 727,756.80 is: 1,092,676.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,628.80 : 1,933,286.40 = 727,756.80 : x
  2. Step 2: Convert to fraction form
    1,287,628.80/1,933,286.40 = 727,756.80/x
  3. Step 3: Cross multiply
    1,287,628.80x = 1,933,286.40 × 727,756.80
  4. Step 4: Simplify right side
    1,287,628.80x = 1,406,962,323,947.52
  5. Step 5: Solve for x
    x = 1,406,962,323,947.52/1,287,628.80
  6. Step 6: Final answer
    x = 1,092,676.96

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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.