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Finding the Fourth Proportional to 522,080.40, 783,120.60 and 342,454.80

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Solution

The fourth proportional to 522,080.40, 783,120.60 and 342,454.80 is: 513,682.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,080.40 : 783,120.60 = 342,454.80 : x
  2. Step 2: Convert to fraction form
    522,080.40/783,120.60 = 342,454.80/x
  3. Step 3: Cross multiply
    522,080.40x = 783,120.60 × 342,454.80
  4. Step 4: Simplify right side
    522,080.40x = 268,183,408,448.88
  5. Step 5: Solve for x
    x = 268,183,408,448.88/522,080.40
  6. Step 6: Final answer
    x = 513,682.20

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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.