Home / 830,131.20-1,245,196.80-620,179.20

Finding the Fourth Proportional to 830,131.20, 1,245,196.80 and 620,179.20

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Solution

The fourth proportional to 830,131.20, 1,245,196.80 and 620,179.20 is: 930,268.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,131.20 : 1,245,196.80 = 620,179.20 : x
  2. Step 2: Convert to fraction form
    830,131.20/1,245,196.80 = 620,179.20/x
  3. Step 3: Cross multiply
    830,131.20x = 1,245,196.80 × 620,179.20
  4. Step 4: Simplify right side
    830,131.20x = 772,245,155,266.56
  5. Step 5: Solve for x
    x = 772,245,155,266.56/830,131.20
  6. Step 6: Final answer
    x = 930,268.80

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Double scale
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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.