Home / 856,118.72-1,284,374.86-257,091.18

Finding the Fourth Proportional to 856,118.72, 1,284,374.86 and 257,091.18

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Solution

The fourth proportional to 856,118.72, 1,284,374.86 and 257,091.18 is: 385,695.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,118.72 : 1,284,374.86 = 257,091.18 : x
  2. Step 2: Convert to fraction form
    856,118.72/1,284,374.86 = 257,091.18/x
  3. Step 3: Cross multiply
    856,118.72x = 1,284,374.86 × 257,091.18
  4. Step 4: Simplify right side
    856,118.72x = 330,201,448,319.74
  5. Step 5: Solve for x
    x = 330,201,448,319.74/856,118.72
  6. Step 6: Final answer
    x = 385,695.86

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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.