Home / 746,720.40-1,120,080.60-431,792.40

Finding the Fourth Proportional to 746,720.40, 1,120,080.60 and 431,792.40

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Solution

The fourth proportional to 746,720.40, 1,120,080.60 and 431,792.40 is: 647,688.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,720.40 : 1,120,080.60 = 431,792.40 : x
  2. Step 2: Convert to fraction form
    746,720.40/1,120,080.60 = 431,792.40/x
  3. Step 3: Cross multiply
    746,720.40x = 1,120,080.60 × 431,792.40
  4. Step 4: Simplify right side
    746,720.40x = 483,642,290,467.44
  5. Step 5: Solve for x
    x = 483,642,290,467.44/746,720.40
  6. Step 6: Final answer
    x = 647,688.60

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Double scale
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Similar ratio
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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.