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Finding the Fourth Proportional to 434,531.80, 651,408.90 and 284,843.80

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Solution

The fourth proportional to 434,531.80, 651,408.90 and 284,843.80 is: 427,010.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,531.80 : 651,408.90 = 284,843.80 : x
  2. Step 2: Convert to fraction form
    434,531.80/651,408.90 = 284,843.80/x
  3. Step 3: Cross multiply
    434,531.80x = 651,408.90 × 284,843.80
  4. Step 4: Simplify right side
    434,531.80x = 185,549,786,429.82
  5. Step 5: Solve for x
    x = 185,549,786,429.82/434,531.80
  6. Step 6: Final answer
    x = 427,010.83

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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.