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Finding the Fourth Proportional to 512,896.70, 769,345.05 and 483,372.20

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Solution

The fourth proportional to 512,896.70, 769,345.05 and 483,372.20 is: 725,058.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,896.70 : 769,345.05 = 483,372.20 : x
  2. Step 2: Convert to fraction form
    512,896.70/769,345.05 = 483,372.20/x
  3. Step 3: Cross multiply
    512,896.70x = 769,345.05 × 483,372.20
  4. Step 4: Simplify right side
    512,896.70x = 371,880,009,377.61
  5. Step 5: Solve for x
    x = 371,880,009,377.61/512,896.70
  6. Step 6: Final answer
    x = 725,058.30

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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.