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Finding the Fourth Proportional to 508,588.40, 763,757.40 and 331,878.80

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Solution

The fourth proportional to 508,588.40, 763,757.40 and 331,878.80 is: 498,389.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,588.40 : 763,757.40 = 331,878.80 : x
  2. Step 2: Convert to fraction form
    508,588.40/763,757.40 = 331,878.80/x
  3. Step 3: Cross multiply
    508,588.40x = 763,757.40 × 331,878.80
  4. Step 4: Simplify right side
    508,588.40x = 253,474,889,403.12
  5. Step 5: Solve for x
    x = 253,474,889,403.12/508,588.40
  6. Step 6: Final answer
    x = 498,389.05

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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.