Home / 984,136.80-1,476,205.20-319,288.80

Finding the Fourth Proportional to 984,136.80, 1,476,205.20 and 319,288.80

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Solution

The fourth proportional to 984,136.80, 1,476,205.20 and 319,288.80 is: 478,933.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,136.80 : 1,476,205.20 = 319,288.80 : x
  2. Step 2: Convert to fraction form
    984,136.80/1,476,205.20 = 319,288.80/x
  3. Step 3: Cross multiply
    984,136.80x = 1,476,205.20 × 319,288.80
  4. Step 4: Simplify right side
    984,136.80x = 471,335,786,861.76
  5. Step 5: Solve for x
    x = 471,335,786,861.76/984,136.80
  6. Step 6: Final answer
    x = 478,933.20

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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.