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Finding the Fourth Proportional to 538,379.20, 807,568.80 and 513,884.80

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Solution

The fourth proportional to 538,379.20, 807,568.80 and 513,884.80 is: 770,827.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,379.20 : 807,568.80 = 513,884.80 : x
  2. Step 2: Convert to fraction form
    538,379.20/807,568.80 = 513,884.80/x
  3. Step 3: Cross multiply
    538,379.20x = 807,568.80 × 513,884.80
  4. Step 4: Simplify right side
    538,379.20x = 414,997,331,274.24
  5. Step 5: Solve for x
    x = 414,997,331,274.24/538,379.20
  6. Step 6: Final answer
    x = 770,827.20

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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.