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Finding the Fourth Proportional to 673,343.82, 930,446.19 and 640,542.06

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Solution

The fourth proportional to 673,343.82, 930,446.19 and 640,542.06 is: 885,119.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,343.82 : 930,446.19 = 640,542.06 : x
  2. Step 2: Convert to fraction form
    673,343.82/930,446.19 = 640,542.06/x
  3. Step 3: Cross multiply
    673,343.82x = 930,446.19 × 640,542.06
  4. Step 4: Simplify right side
    673,343.82x = 595,989,919,261.75
  5. Step 5: Solve for x
    x = 595,989,919,261.75/673,343.82
  6. Step 6: Final answer
    x = 885,119.76

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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.