Home / 1,190,047.78-1,785,129.06-391,311.64

Finding the Fourth Proportional to 1,190,047.78, 1,785,129.06 and 391,311.64

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Solution

The fourth proportional to 1,190,047.78, 1,785,129.06 and 391,311.64 is: 586,986.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,047.78 : 1,785,129.06 = 391,311.64 : x
  2. Step 2: Convert to fraction form
    1,190,047.78/1,785,129.06 = 391,311.64/x
  3. Step 3: Cross multiply
    1,190,047.78x = 1,785,129.06 × 391,311.64
  4. Step 4: Simplify right side
    1,190,047.78x = 698,541,780,080.26
  5. Step 5: Solve for x
    x = 698,541,780,080.26/1,190,047.78
  6. Step 6: Final answer
    x = 586,986.33

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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.