Home / 756,640.60-1,135,402.50-419,963.80

Finding the Fourth Proportional to 756,640.60, 1,135,402.50 and 419,963.80

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Solution

The fourth proportional to 756,640.60, 1,135,402.50 and 419,963.80 is: 630,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,640.60 : 1,135,402.50 = 419,963.80 : x
  2. Step 2: Convert to fraction form
    756,640.60/1,135,402.50 = 419,963.80/x
  3. Step 3: Cross multiply
    756,640.60x = 1,135,402.50 × 419,963.80
  4. Step 4: Simplify right side
    756,640.60x = 476,827,948,429.50
  5. Step 5: Solve for x
    x = 476,827,948,429.50/756,640.60
  6. Step 6: Final answer
    x = 630,190.80

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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.