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Finding the Fourth Proportional to 521,606.55, 781,394.63 and 384,580.07

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Solution

The fourth proportional to 521,606.55, 781,394.63 and 384,580.07 is: 576,121.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,606.55 : 781,394.63 = 384,580.07 : x
  2. Step 2: Convert to fraction form
    521,606.55/781,394.63 = 384,580.07/x
  3. Step 3: Cross multiply
    521,606.55x = 781,394.63 × 384,580.07
  4. Step 4: Simplify right side
    521,606.55x = 300,508,795,673.15
  5. Step 5: Solve for x
    x = 300,508,795,673.15/521,606.55
  6. Step 6: Final answer
    x = 576,121.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.