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Finding the Fourth Proportional to 574,317.12, 792,540 and 319,661.76

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Solution

The fourth proportional to 574,317.12, 792,540 and 319,661.76 is: 441,123.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,317.12 : 792,540 = 319,661.76 : x
  2. Step 2: Convert to fraction form
    574,317.12/792,540 = 319,661.76/x
  3. Step 3: Cross multiply
    574,317.12x = 792,540 × 319,661.76
  4. Step 4: Simplify right side
    574,317.12x = 253,344,731,270.40
  5. Step 5: Solve for x
    x = 253,344,731,270.40/574,317.12
  6. Step 6: Final answer
    x = 441,123.42

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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.