Home / 680,538.20-1,021,196.10-260,115.80

Finding the Fourth Proportional to 680,538.20, 1,021,196.10 and 260,115.80

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Solution

The fourth proportional to 680,538.20, 1,021,196.10 and 260,115.80 is: 390,322.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,538.20 : 1,021,196.10 = 260,115.80 : x
  2. Step 2: Convert to fraction form
    680,538.20/1,021,196.10 = 260,115.80/x
  3. Step 3: Cross multiply
    680,538.20x = 1,021,196.10 × 260,115.80
  4. Step 4: Simplify right side
    680,538.20x = 265,629,240,508.38
  5. Step 5: Solve for x
    x = 265,629,240,508.38/680,538.20
  6. Step 6: Final answer
    x = 390,322.31

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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.