Home / 519,941.70-779,912.55-512,943.30

Finding the Fourth Proportional to 519,941.70, 779,912.55 and 512,943.30

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Solution

The fourth proportional to 519,941.70, 779,912.55 and 512,943.30 is: 769,414.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,941.70 : 779,912.55 = 512,943.30 : x
  2. Step 2: Convert to fraction form
    519,941.70/779,912.55 = 512,943.30/x
  3. Step 3: Cross multiply
    519,941.70x = 779,912.55 × 512,943.30
  4. Step 4: Simplify right side
    519,941.70x = 400,050,917,108.42
  5. Step 5: Solve for x
    x = 400,050,917,108.42/519,941.70
  6. Step 6: Final answer
    x = 769,414.95

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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.