Home / 755,438.40-1,133,157.60-419,515.20

Finding the Fourth Proportional to 755,438.40, 1,133,157.60 and 419,515.20

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Solution

The fourth proportional to 755,438.40, 1,133,157.60 and 419,515.20 is: 629,272.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,438.40 : 1,133,157.60 = 419,515.20 : x
  2. Step 2: Convert to fraction form
    755,438.40/1,133,157.60 = 419,515.20/x
  3. Step 3: Cross multiply
    755,438.40x = 1,133,157.60 × 419,515.20
  4. Step 4: Simplify right side
    755,438.40x = 475,376,837,195.52
  5. Step 5: Solve for x
    x = 475,376,837,195.52/755,438.40
  6. Step 6: Final answer
    x = 629,272.80

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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.