Home / 878,132.40-1,317,198.60-345,670.80

Finding the Fourth Proportional to 878,132.40, 1,317,198.60 and 345,670.80

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Solution

The fourth proportional to 878,132.40, 1,317,198.60 and 345,670.80 is: 518,506.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,132.40 : 1,317,198.60 = 345,670.80 : x
  2. Step 2: Convert to fraction form
    878,132.40/1,317,198.60 = 345,670.80/x
  3. Step 3: Cross multiply
    878,132.40x = 1,317,198.60 × 345,670.80
  4. Step 4: Simplify right side
    878,132.40x = 455,317,093,820.88
  5. Step 5: Solve for x
    x = 455,317,093,820.88/878,132.40
  6. Step 6: Final answer
    x = 518,506.20

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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.