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Finding the Fourth Proportional to 574,989.40, 793,486.20 and 320,349.52

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Solution

The fourth proportional to 574,989.40, 793,486.20 and 320,349.52 is: 442,082.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,989.40 : 793,486.20 = 320,349.52 : x
  2. Step 2: Convert to fraction form
    574,989.40/793,486.20 = 320,349.52/x
  3. Step 3: Cross multiply
    574,989.40x = 793,486.20 × 320,349.52
  4. Step 4: Simplify right side
    574,989.40x = 254,192,923,296.62
  5. Step 5: Solve for x
    x = 254,192,923,296.62/574,989.40
  6. Step 6: Final answer
    x = 442,082.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.