Home / 744,265.20-1,115,166.60-428,170.80

Finding the Fourth Proportional to 744,265.20, 1,115,166.60 and 428,170.80

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Solution

The fourth proportional to 744,265.20, 1,115,166.60 and 428,170.80 is: 641,547.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,265.20 : 1,115,166.60 = 428,170.80 : x
  2. Step 2: Convert to fraction form
    744,265.20/1,115,166.60 = 428,170.80/x
  3. Step 3: Cross multiply
    744,265.20x = 1,115,166.60 × 428,170.80
  4. Step 4: Simplify right side
    744,265.20x = 477,481,775,255.28
  5. Step 5: Solve for x
    x = 477,481,775,255.28/744,265.20
  6. Step 6: Final answer
    x = 641,547.90

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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.