Home / 1,189,905.46-1,785,079.62-391,218.54

Finding the Fourth Proportional to 1,189,905.46, 1,785,079.62 and 391,218.54

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Solution

The fourth proportional to 1,189,905.46, 1,785,079.62 and 391,218.54 is: 586,900.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,905.46 : 1,785,079.62 = 391,218.54 : x
  2. Step 2: Convert to fraction form
    1,189,905.46/1,785,079.62 = 391,218.54/x
  3. Step 3: Cross multiply
    1,189,905.46x = 1,785,079.62 × 391,218.54
  4. Step 4: Simplify right side
    1,189,905.46x = 698,356,242,720.16
  5. Step 5: Solve for x
    x = 698,356,242,720.16/1,189,905.46
  6. Step 6: Final answer
    x = 586,900.61

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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.