Home / 503,722.20-755,583.30-438,112.20

Finding the Fourth Proportional to 503,722.20, 755,583.30 and 438,112.20

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Solution

The fourth proportional to 503,722.20, 755,583.30 and 438,112.20 is: 657,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,722.20 : 755,583.30 = 438,112.20 : x
  2. Step 2: Convert to fraction form
    503,722.20/755,583.30 = 438,112.20/x
  3. Step 3: Cross multiply
    503,722.20x = 755,583.30 × 438,112.20
  4. Step 4: Simplify right side
    503,722.20x = 331,030,261,846.26
  5. Step 5: Solve for x
    x = 331,030,261,846.26/503,722.20
  6. Step 6: Final answer
    x = 657,168.30

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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.