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Finding the Fourth Proportional to 573,978.42, 792,039.87 and 319,343.58

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Solution

The fourth proportional to 573,978.42, 792,039.87 and 319,343.58 is: 440,666.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,978.42 : 792,039.87 = 319,343.58 : x
  2. Step 2: Convert to fraction form
    573,978.42/792,039.87 = 319,343.58/x
  3. Step 3: Cross multiply
    573,978.42x = 792,039.87 × 319,343.58
  4. Step 4: Simplify right side
    573,978.42x = 252,932,847,588.54
  5. Step 5: Solve for x
    x = 252,932,847,588.54/573,978.42
  6. Step 6: Final answer
    x = 440,666.13

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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.