Home / 1,288,727.20-1,933,090.80-910,813.60

Finding the Fourth Proportional to 1,288,727.20, 1,933,090.80 and 910,813.60

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Solution

The fourth proportional to 1,288,727.20, 1,933,090.80 and 910,813.60 is: 1,366,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,727.20 : 1,933,090.80 = 910,813.60 : x
  2. Step 2: Convert to fraction form
    1,288,727.20/1,933,090.80 = 910,813.60/x
  3. Step 3: Cross multiply
    1,288,727.20x = 1,933,090.80 × 910,813.60
  4. Step 4: Simplify right side
    1,288,727.20x = 1,760,685,390,674.88
  5. Step 5: Solve for x
    x = 1,760,685,390,674.88/1,288,727.20
  6. Step 6: Final answer
    x = 1,366,220.40

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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.