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Finding the Fourth Proportional to 586,581.06, 809,481.87 and 318,309.06

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Solution

The fourth proportional to 586,581.06, 809,481.87 and 318,309.06 is: 439,266.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,581.06 : 809,481.87 = 318,309.06 : x
  2. Step 2: Convert to fraction form
    586,581.06/809,481.87 = 318,309.06/x
  3. Step 3: Cross multiply
    586,581.06x = 809,481.87 × 318,309.06
  4. Step 4: Simplify right side
    586,581.06x = 257,665,413,126.74
  5. Step 5: Solve for x
    x = 257,665,413,126.74/586,581.06
  6. Step 6: Final answer
    x = 439,266.51

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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.