Home / 579,212.20-868,818.30-478,828.90

Finding the Fourth Proportional to 579,212.20, 868,818.30 and 478,828.90

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Solution

The fourth proportional to 579,212.20, 868,818.30 and 478,828.90 is: 718,243.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,212.20 : 868,818.30 = 478,828.90 : x
  2. Step 2: Convert to fraction form
    579,212.20/868,818.30 = 478,828.90/x
  3. Step 3: Cross multiply
    579,212.20x = 868,818.30 × 478,828.90
  4. Step 4: Simplify right side
    579,212.20x = 416,015,310,888.87
  5. Step 5: Solve for x
    x = 416,015,310,888.87/579,212.20
  6. Step 6: Final answer
    x = 718,243.35

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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.