Home / 579,256.11-869,474.66-399,353.49

Finding the Fourth Proportional to 579,256.11, 869,474.66 and 399,353.49

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Solution

The fourth proportional to 579,256.11, 869,474.66 and 399,353.49 is: 599,437.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,256.11 : 869,474.66 = 399,353.49 : x
  2. Step 2: Convert to fraction form
    579,256.11/869,474.66 = 399,353.49/x
  3. Step 3: Cross multiply
    579,256.11x = 869,474.66 × 399,353.49
  4. Step 4: Simplify right side
    579,256.11x = 347,227,737,940.80
  5. Step 5: Solve for x
    x = 347,227,737,940.80/579,256.11
  6. Step 6: Final answer
    x = 599,437.33

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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.