Home / 579,817.38-800,154.72-321,699.18

Finding the Fourth Proportional to 579,817.38, 800,154.72 and 321,699.18

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Solution

The fourth proportional to 579,817.38, 800,154.72 and 321,699.18 is: 443,948.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,817.38 : 800,154.72 = 321,699.18 : x
  2. Step 2: Convert to fraction form
    579,817.38/800,154.72 = 321,699.18/x
  3. Step 3: Cross multiply
    579,817.38x = 800,154.72 × 321,699.18
  4. Step 4: Simplify right side
    579,817.38x = 257,409,117,297.13
  5. Step 5: Solve for x
    x = 257,409,117,297.13/579,817.38
  6. Step 6: Final answer
    x = 443,948.61

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.