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Finding the Fourth Proportional to 550,358.40, 825,537.60 and 425,788.80

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Solution

The fourth proportional to 550,358.40, 825,537.60 and 425,788.80 is: 638,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,358.40 : 825,537.60 = 425,788.80 : x
  2. Step 2: Convert to fraction form
    550,358.40/825,537.60 = 425,788.80/x
  3. Step 3: Cross multiply
    550,358.40x = 825,537.60 × 425,788.80
  4. Step 4: Simplify right side
    550,358.40x = 351,504,664,058.88
  5. Step 5: Solve for x
    x = 351,504,664,058.88/550,358.40
  6. Step 6: Final answer
    x = 638,683.20

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1.5x scale

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.