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Finding the Fourth Proportional to 521,905.72, 782,854.44 and 310,141.24

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Solution

The fourth proportional to 521,905.72, 782,854.44 and 310,141.24 is: 465,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,905.72 : 782,854.44 = 310,141.24 : x
  2. Step 2: Convert to fraction form
    521,905.72/782,854.44 = 310,141.24/x
  3. Step 3: Cross multiply
    521,905.72x = 782,854.44 × 310,141.24
  4. Step 4: Simplify right side
    521,905.72x = 242,795,446,761.11
  5. Step 5: Solve for x
    x = 242,795,446,761.11/521,905.72
  6. Step 6: Final answer
    x = 465,209.40

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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.