Home / 838,136.70-1,257,205.05-603,690.30

Finding the Fourth Proportional to 838,136.70, 1,257,205.05 and 603,690.30

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Solution

The fourth proportional to 838,136.70, 1,257,205.05 and 603,690.30 is: 905,535.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,136.70 : 1,257,205.05 = 603,690.30 : x
  2. Step 2: Convert to fraction form
    838,136.70/1,257,205.05 = 603,690.30/x
  3. Step 3: Cross multiply
    838,136.70x = 1,257,205.05 × 603,690.30
  4. Step 4: Simplify right side
    838,136.70x = 758,962,493,796.02
  5. Step 5: Solve for x
    x = 758,962,493,796.02/838,136.70
  6. Step 6: Final answer
    x = 905,535.45

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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.