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Finding the Fourth Proportional to 564,940.88, 779,428.68 and 319,892.24

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Solution

The fourth proportional to 564,940.88, 779,428.68 and 319,892.24 is: 441,343.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,940.88 : 779,428.68 = 319,892.24 : x
  2. Step 2: Convert to fraction form
    564,940.88/779,428.68 = 319,892.24/x
  3. Step 3: Cross multiply
    564,940.88x = 779,428.68 × 319,892.24
  4. Step 4: Simplify right side
    564,940.88x = 249,333,186,365.44
  5. Step 5: Solve for x
    x = 249,333,186,365.44/564,940.88
  6. Step 6: Final answer
    x = 441,343.86

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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.