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Finding the Fourth Proportional to 577,701.51, 797,213.17 and 319,571.72

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Solution

The fourth proportional to 577,701.51, 797,213.17 and 319,571.72 is: 441,000.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,701.51 : 797,213.17 = 319,571.72 : x
  2. Step 2: Convert to fraction form
    577,701.51/797,213.17 = 319,571.72/x
  3. Step 3: Cross multiply
    577,701.51x = 797,213.17 × 319,571.72
  4. Step 4: Simplify right side
    577,701.51x = 254,766,783,943.55
  5. Step 5: Solve for x
    x = 254,766,783,943.55/577,701.51
  6. Step 6: Final answer
    x = 441,000.72

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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.