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Finding the Fourth Proportional to 654,646.28, 903,397.68 and 379,015.76

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Solution

The fourth proportional to 654,646.28, 903,397.68 and 379,015.76 is: 523,033.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,646.28 : 903,397.68 = 379,015.76 : x
  2. Step 2: Convert to fraction form
    654,646.28/903,397.68 = 379,015.76/x
  3. Step 3: Cross multiply
    654,646.28x = 903,397.68 × 379,015.76
  4. Step 4: Simplify right side
    654,646.28x = 342,401,958,267.44
  5. Step 5: Solve for x
    x = 342,401,958,267.44/654,646.28
  6. Step 6: Final answer
    x = 523,033.54

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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.