Home / 830,003.20-1,245,004.80-711,905.20

Finding the Fourth Proportional to 830,003.20, 1,245,004.80 and 711,905.20

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Solution

The fourth proportional to 830,003.20, 1,245,004.80 and 711,905.20 is: 1,067,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,003.20 : 1,245,004.80 = 711,905.20 : x
  2. Step 2: Convert to fraction form
    830,003.20/1,245,004.80 = 711,905.20/x
  3. Step 3: Cross multiply
    830,003.20x = 1,245,004.80 × 711,905.20
  4. Step 4: Simplify right side
    830,003.20x = 886,325,391,144.96
  5. Step 5: Solve for x
    x = 886,325,391,144.96/830,003.20
  6. Step 6: Final answer
    x = 1,067,857.80

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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.