Home / 1,190,157.18-1,785,149.37-391,429.50

Finding the Fourth Proportional to 1,190,157.18, 1,785,149.37 and 391,429.50

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Solution

The fourth proportional to 1,190,157.18, 1,785,149.37 and 391,429.50 is: 587,115.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,157.18 : 1,785,149.37 = 391,429.50 : x
  2. Step 2: Convert to fraction form
    1,190,157.18/1,785,149.37 = 391,429.50/x
  3. Step 3: Cross multiply
    1,190,157.18x = 1,785,149.37 × 391,429.50
  4. Step 4: Simplify right side
    1,190,157.18x = 698,760,125,324.42
  5. Step 5: Solve for x
    x = 698,760,125,324.42/1,190,157.18
  6. Step 6: Final answer
    x = 587,115.83

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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.