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Finding the Fourth Proportional to 538,894.80, 808,342.20 and 531,021.60

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Solution

The fourth proportional to 538,894.80, 808,342.20 and 531,021.60 is: 796,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,894.80 : 808,342.20 = 531,021.60 : x
  2. Step 2: Convert to fraction form
    538,894.80/808,342.20 = 531,021.60/x
  3. Step 3: Cross multiply
    538,894.80x = 808,342.20 × 531,021.60
  4. Step 4: Simplify right side
    538,894.80x = 429,247,168,391.52
  5. Step 5: Solve for x
    x = 429,247,168,391.52/538,894.80
  6. Step 6: Final answer
    x = 796,532.40

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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.