Home / 579,225.28-868,982.64-408,779.79

Finding the Fourth Proportional to 579,225.28, 868,982.64 and 408,779.79

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Solution

The fourth proportional to 579,225.28, 868,982.64 and 408,779.79 is: 613,271.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,225.28 : 868,982.64 = 408,779.79 : x
  2. Step 2: Convert to fraction form
    579,225.28/868,982.64 = 408,779.79/x
  3. Step 3: Cross multiply
    579,225.28x = 868,982.64 × 408,779.79
  4. Step 4: Simplify right side
    579,225.28x = 355,222,541,092.85
  5. Step 5: Solve for x
    x = 355,222,541,092.85/579,225.28
  6. Step 6: Final answer
    x = 613,271.82

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Double scale
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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.