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Finding the Fourth Proportional to 439,551.60, 659,327.40 and 408,058.80

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Solution

The fourth proportional to 439,551.60, 659,327.40 and 408,058.80 is: 612,088.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,551.60 : 659,327.40 = 408,058.80 : x
  2. Step 2: Convert to fraction form
    439,551.60/659,327.40 = 408,058.80/x
  3. Step 3: Cross multiply
    439,551.60x = 659,327.40 × 408,058.80
  4. Step 4: Simplify right side
    439,551.60x = 269,044,347,651.12
  5. Step 5: Solve for x
    x = 269,044,347,651.12/439,551.60
  6. Step 6: Final answer
    x = 612,088.20

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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.