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Finding the Fourth Proportional to 508,590.40, 763,760.40 and 331,880.80

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Solution

The fourth proportional to 508,590.40, 763,760.40 and 331,880.80 is: 498,392.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,590.40 : 763,760.40 = 331,880.80 : x
  2. Step 2: Convert to fraction form
    508,590.40/763,760.40 = 331,880.80/x
  3. Step 3: Cross multiply
    508,590.40x = 763,760.40 × 331,880.80
  4. Step 4: Simplify right side
    508,590.40x = 253,477,412,560.32
  5. Step 5: Solve for x
    x = 253,477,412,560.32/508,590.40
  6. Step 6: Final answer
    x = 498,392.05

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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.