Home / 579,064.56-868,712.96-199,999.20

Finding the Fourth Proportional to 579,064.56, 868,712.96 and 199,999.20

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Solution

The fourth proportional to 579,064.56, 868,712.96 and 199,999.20 is: 300,038.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,064.56 : 868,712.96 = 199,999.20 : x
  2. Step 2: Convert to fraction form
    579,064.56/868,712.96 = 199,999.20/x
  3. Step 3: Cross multiply
    579,064.56x = 868,712.96 × 199,999.20
  4. Step 4: Simplify right side
    579,064.56x = 173,741,897,029.63
  5. Step 5: Solve for x
    x = 173,741,897,029.63/579,064.56
  6. Step 6: Final answer
    x = 300,038.91

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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.