Home / 823,407.80-1,235,111.70-262,442.30

Finding the Fourth Proportional to 823,407.80, 1,235,111.70 and 262,442.30

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Solution

The fourth proportional to 823,407.80, 1,235,111.70 and 262,442.30 is: 393,663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,407.80 : 1,235,111.70 = 262,442.30 : x
  2. Step 2: Convert to fraction form
    823,407.80/1,235,111.70 = 262,442.30/x
  3. Step 3: Cross multiply
    823,407.80x = 1,235,111.70 × 262,442.30
  4. Step 4: Simplify right side
    823,407.80x = 324,145,555,304.91
  5. Step 5: Solve for x
    x = 324,145,555,304.91/823,407.80
  6. Step 6: Final answer
    x = 393,663.45

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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.