Home / 1,086,399,421.80-1,629,599,132.70-396,329,188.20

Finding the Fourth Proportional to 1,086,399,421.80, 1,629,599,132.70 and 396,329,188.20

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Solution

The fourth proportional to 1,086,399,421.80, 1,629,599,132.70 and 396,329,188.20 is: 594,493,782.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,399,421.80 : 1,629,599,132.70 = 396,329,188.20 : x
  2. Step 2: Convert to fraction form
    1,086,399,421.80/1,629,599,132.70 = 396,329,188.20/x
  3. Step 3: Cross multiply
    1,086,399,421.80x = 1,629,599,132.70 × 396,329,188.20
  4. Step 4: Simplify right side
    1,086,399,421.80x = 645,857,701,354,415,104
  5. Step 5: Solve for x
    x = 645,857,701,354,415,104/1,086,399,421.80
  6. Step 6: Final answer
    x = 594,493,782.30

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Double scale
Find fourth proportional to 1,086,399,422.80, 1,629,599,134.20 and 396,329,189.20
Similar ratio
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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.