Home / 529,836.40-792,940.20-319,625.20

Finding the Fourth Proportional to 529,836.40, 792,940.20 and 319,625.20

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Solution

The fourth proportional to 529,836.40, 792,940.20 and 319,625.20 is: 478,343.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,836.40 : 792,940.20 = 319,625.20 : x
  2. Step 2: Convert to fraction form
    529,836.40/792,940.20 = 319,625.20/x
  3. Step 3: Cross multiply
    529,836.40x = 792,940.20 × 319,625.20
  4. Step 4: Simplify right side
    529,836.40x = 253,443,670,013.04
  5. Step 5: Solve for x
    x = 253,443,670,013.04/529,836.40
  6. Step 6: Final answer
    x = 478,343.26

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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.