Home / 1,986,769.52-2,979,874.37-638,760.81

Finding the Fourth Proportional to 1,986,769.52, 2,979,874.37 and 638,760.81

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Solution

The fourth proportional to 1,986,769.52, 2,979,874.37 and 638,760.81 is: 958,051.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,769.52 : 2,979,874.37 = 638,760.81 : x
  2. Step 2: Convert to fraction form
    1,986,769.52/2,979,874.37 = 638,760.81/x
  3. Step 3: Cross multiply
    1,986,769.52x = 2,979,874.37 × 638,760.81
  4. Step 4: Simplify right side
    1,986,769.52x = 1,903,426,970,669.97
  5. Step 5: Solve for x
    x = 1,903,426,970,669.97/1,986,769.52
  6. Step 6: Final answer
    x = 958,051.22

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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.