Home / 830,084.80-1,245,127.20-269,119.30

Finding the Fourth Proportional to 830,084.80, 1,245,127.20 and 269,119.30

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Solution

The fourth proportional to 830,084.80, 1,245,127.20 and 269,119.30 is: 403,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,084.80 : 1,245,127.20 = 269,119.30 : x
  2. Step 2: Convert to fraction form
    830,084.80/1,245,127.20 = 269,119.30/x
  3. Step 3: Cross multiply
    830,084.80x = 1,245,127.20 × 269,119.30
  4. Step 4: Simplify right side
    830,084.80x = 335,087,760,474.96
  5. Step 5: Solve for x
    x = 335,087,760,474.96/830,084.80
  6. Step 6: Final answer
    x = 403,678.95

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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.