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Finding the Fourth Proportional to 567,486.20, 783,125.82 and 312,837.39

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Solution

The fourth proportional to 567,486.20, 783,125.82 and 312,837.39 is: 431,712.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,486.20 : 783,125.82 = 312,837.39 : x
  2. Step 2: Convert to fraction form
    567,486.20/783,125.82 = 312,837.39/x
  3. Step 3: Cross multiply
    567,486.20x = 783,125.82 × 312,837.39
  4. Step 4: Simplify right side
    567,486.20x = 244,991,037,570.41
  5. Step 5: Solve for x
    x = 244,991,037,570.41/567,486.20
  6. Step 6: Final answer
    x = 431,712.76

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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.