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Finding the Fourth Proportional to 559,540.74, 772,142.06 and 317,822.56

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Solution

The fourth proportional to 559,540.74, 772,142.06 and 317,822.56 is: 438,581.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,540.74 : 772,142.06 = 317,822.56 : x
  2. Step 2: Convert to fraction form
    559,540.74/772,142.06 = 317,822.56/x
  3. Step 3: Cross multiply
    559,540.74x = 772,142.06 × 317,822.56
  4. Step 4: Simplify right side
    559,540.74x = 245,404,166,192.87
  5. Step 5: Solve for x
    x = 245,404,166,192.87/559,540.74
  6. Step 6: Final answer
    x = 438,581.41

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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.