Home / 678,357.60-1,017,536.40-205,375.20

Finding the Fourth Proportional to 678,357.60, 1,017,536.40 and 205,375.20

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Solution

The fourth proportional to 678,357.60, 1,017,536.40 and 205,375.20 is: 308,062.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,357.60 : 1,017,536.40 = 205,375.20 : x
  2. Step 2: Convert to fraction form
    678,357.60/1,017,536.40 = 205,375.20/x
  3. Step 3: Cross multiply
    678,357.60x = 1,017,536.40 × 205,375.20
  4. Step 4: Simplify right side
    678,357.60x = 208,976,741,657.28
  5. Step 5: Solve for x
    x = 208,976,741,657.28/678,357.60
  6. Step 6: Final answer
    x = 308,062.80

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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.