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Finding the Fourth Proportional to 504,138.80, 756,208.20 and 362,421.20

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Solution

The fourth proportional to 504,138.80, 756,208.20 and 362,421.20 is: 543,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,138.80 : 756,208.20 = 362,421.20 : x
  2. Step 2: Convert to fraction form
    504,138.80/756,208.20 = 362,421.20/x
  3. Step 3: Cross multiply
    504,138.80x = 756,208.20 × 362,421.20
  4. Step 4: Simplify right side
    504,138.80x = 274,065,883,293.84
  5. Step 5: Solve for x
    x = 274,065,883,293.84/504,138.80
  6. Step 6: Final answer
    x = 543,631.80

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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.