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Finding the Fourth Proportional to 552,355.79, 762,243.77 and 310,638.29

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Solution

The fourth proportional to 552,355.79, 762,243.77 and 310,638.29 is: 428,676.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,355.79 : 762,243.77 = 310,638.29 : x
  2. Step 2: Convert to fraction form
    552,355.79/762,243.77 = 310,638.29/x
  3. Step 3: Cross multiply
    552,355.79x = 762,243.77 × 310,638.29
  4. Step 4: Simplify right side
    552,355.79x = 236,782,099,722.76
  5. Step 5: Solve for x
    x = 236,782,099,722.76/552,355.79
  6. Step 6: Final answer
    x = 428,676.78

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1.5x scale

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.