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Finding the Fourth Proportional to 559,536.48, 772,136.21 and 317,818.31

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Solution

The fourth proportional to 559,536.48, 772,136.21 and 317,818.31 is: 438,575.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,536.48 : 772,136.21 = 317,818.31 : x
  2. Step 2: Convert to fraction form
    559,536.48/772,136.21 = 317,818.31/x
  3. Step 3: Cross multiply
    559,536.48x = 772,136.21 × 317,818.31
  4. Step 4: Simplify right side
    559,536.48x = 245,399,022,285.87
  5. Step 5: Solve for x
    x = 245,399,022,285.87/559,536.48
  6. Step 6: Final answer
    x = 438,575.56

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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.