Home / 729,039.70-1,093,559.55-640,466.20

Finding the Fourth Proportional to 729,039.70, 1,093,559.55 and 640,466.20

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Solution

The fourth proportional to 729,039.70, 1,093,559.55 and 640,466.20 is: 960,699.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,039.70 : 1,093,559.55 = 640,466.20 : x
  2. Step 2: Convert to fraction form
    729,039.70/1,093,559.55 = 640,466.20/x
  3. Step 3: Cross multiply
    729,039.70x = 1,093,559.55 × 640,466.20
  4. Step 4: Simplify right side
    729,039.70x = 700,387,929,462.21
  5. Step 5: Solve for x
    x = 700,387,929,462.21/729,039.70
  6. Step 6: Final answer
    x = 960,699.30

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Half scale
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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.