Home / 1,290,218.76-1,780,562.66-717,268.50

Finding the Fourth Proportional to 1,290,218.76, 1,780,562.66 and 717,268.50

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Solution

The fourth proportional to 1,290,218.76, 1,780,562.66 and 717,268.50 is: 989,864.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,218.76 : 1,780,562.66 = 717,268.50 : x
  2. Step 2: Convert to fraction form
    1,290,218.76/1,780,562.66 = 717,268.50/x
  3. Step 3: Cross multiply
    1,290,218.76x = 1,780,562.66 × 717,268.50
  4. Step 4: Simplify right side
    1,290,218.76x = 1,277,141,504,707.87
  5. Step 5: Solve for x
    x = 1,277,141,504,707.87/1,290,218.76
  6. Step 6: Final answer
    x = 989,864.31

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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.