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Finding the Fourth Proportional to 574,428.24, 792,738.63 and 319,779.36

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Solution

The fourth proportional to 574,428.24, 792,738.63 and 319,779.36 is: 441,310.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,428.24 : 792,738.63 = 319,779.36 : x
  2. Step 2: Convert to fraction form
    574,428.24/792,738.63 = 319,779.36/x
  3. Step 3: Cross multiply
    574,428.24x = 792,738.63 × 319,779.36
  4. Step 4: Simplify right side
    574,428.24x = 253,501,451,748.68
  5. Step 5: Solve for x
    x = 253,501,451,748.68/574,428.24
  6. Step 6: Final answer
    x = 441,310.91

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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.