Home / 579,212.70-868,819.05-478,829.40

Finding the Fourth Proportional to 579,212.70, 868,819.05 and 478,829.40

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Solution

The fourth proportional to 579,212.70, 868,819.05 and 478,829.40 is: 718,244.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,212.70 : 868,819.05 = 478,829.40 : x
  2. Step 2: Convert to fraction form
    579,212.70/868,819.05 = 478,829.40/x
  3. Step 3: Cross multiply
    579,212.70x = 868,819.05 × 478,829.40
  4. Step 4: Simplify right side
    579,212.70x = 416,016,104,420.07
  5. Step 5: Solve for x
    x = 416,016,104,420.07/579,212.70
  6. Step 6: Final answer
    x = 718,244.10

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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.