Home / 1,255,005.20-1,731,840.86-711,147.50

Finding the Fourth Proportional to 1,255,005.20, 1,731,840.86 and 711,147.50

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Solution

The fourth proportional to 1,255,005.20, 1,731,840.86 and 711,147.50 is: 981,345.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255,005.20 : 1,731,840.86 = 711,147.50 : x
  2. Step 2: Convert to fraction form
    1,255,005.20/1,731,840.86 = 711,147.50/x
  3. Step 3: Cross multiply
    1,255,005.20x = 1,731,840.86 × 711,147.50
  4. Step 4: Simplify right side
    1,255,005.20x = 1,231,594,297,986.85
  5. Step 5: Solve for x
    x = 1,231,594,297,986.85/1,255,005.20
  6. Step 6: Final answer
    x = 981,345.97

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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.