Home / 579,614.60-869,681.10-205,905.80

Finding the Fourth Proportional to 579,614.60, 869,681.10 and 205,905.80

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Solution

The fourth proportional to 579,614.60, 869,681.10 and 205,905.80 is: 308,950.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,614.60 : 869,681.10 = 205,905.80 : x
  2. Step 2: Convert to fraction form
    579,614.60/869,681.10 = 205,905.80/x
  3. Step 3: Cross multiply
    579,614.60x = 869,681.10 × 205,905.80
  4. Step 4: Simplify right side
    579,614.60x = 179,072,382,640.38
  5. Step 5: Solve for x
    x = 179,072,382,640.38/579,614.60
  6. Step 6: Final answer
    x = 308,950.78

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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.