Home / 822,085.60-1,233,128.40-261,176.80

Finding the Fourth Proportional to 822,085.60, 1,233,128.40 and 261,176.80

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Solution

The fourth proportional to 822,085.60, 1,233,128.40 and 261,176.80 is: 391,765.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,085.60 : 1,233,128.40 = 261,176.80 : x
  2. Step 2: Convert to fraction form
    822,085.60/1,233,128.40 = 261,176.80/x
  3. Step 3: Cross multiply
    822,085.60x = 1,233,128.40 × 261,176.80
  4. Step 4: Simplify right side
    822,085.60x = 322,064,529,501.12
  5. Step 5: Solve for x
    x = 322,064,529,501.12/822,085.60
  6. Step 6: Final answer
    x = 391,765.20

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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.