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Finding the Fourth Proportional to 486,492.78, 729,778.05 and 171,020.46

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Solution

The fourth proportional to 486,492.78, 729,778.05 and 171,020.46 is: 256,544.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,492.78 : 729,778.05 = 171,020.46 : x
  2. Step 2: Convert to fraction form
    486,492.78/729,778.05 = 171,020.46/x
  3. Step 3: Cross multiply
    486,492.78x = 729,778.05 × 171,020.46
  4. Step 4: Simplify right side
    486,492.78x = 124,806,977,808.90
  5. Step 5: Solve for x
    x = 124,806,977,808.90/486,492.78
  6. Step 6: Final answer
    x = 256,544.36

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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.