Home / 1,078,841.80-1,618,262.70-680,710.60

Finding the Fourth Proportional to 1,078,841.80, 1,618,262.70 and 680,710.60

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Solution

The fourth proportional to 1,078,841.80, 1,618,262.70 and 680,710.60 is: 1,021,065.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,841.80 : 1,618,262.70 = 680,710.60 : x
  2. Step 2: Convert to fraction form
    1,078,841.80/1,618,262.70 = 680,710.60/x
  3. Step 3: Cross multiply
    1,078,841.80x = 1,618,262.70 × 680,710.60
  4. Step 4: Simplify right side
    1,078,841.80x = 1,101,568,573,474.62
  5. Step 5: Solve for x
    x = 1,101,568,573,474.62/1,078,841.80
  6. Step 6: Final answer
    x = 1,021,065.90

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Double scale
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1.5x scale

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.