Home / 743,523.20-1,114,053.60-427,428.80

Finding the Fourth Proportional to 743,523.20, 1,114,053.60 and 427,428.80

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Solution

The fourth proportional to 743,523.20, 1,114,053.60 and 427,428.80 is: 640,435.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,523.20 : 1,114,053.60 = 427,428.80 : x
  2. Step 2: Convert to fraction form
    743,523.20/1,114,053.60 = 427,428.80/x
  3. Step 3: Cross multiply
    743,523.20x = 1,114,053.60 × 427,428.80
  4. Step 4: Simplify right side
    743,523.20x = 476,178,593,383.68
  5. Step 5: Solve for x
    x = 476,178,593,383.68/743,523.20
  6. Step 6: Final answer
    x = 640,435.42

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Double scale
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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.