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Finding the Fourth Proportional to 513,074.60, 769,830.60 and 323,680.40

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Solution

The fourth proportional to 513,074.60, 769,830.60 and 323,680.40 is: 485,658.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,074.60 : 769,830.60 = 323,680.40 : x
  2. Step 2: Convert to fraction form
    513,074.60/769,830.60 = 323,680.40/x
  3. Step 3: Cross multiply
    513,074.60x = 769,830.60 × 323,680.40
  4. Step 4: Simplify right side
    513,074.60x = 249,179,076,540.24
  5. Step 5: Solve for x
    x = 249,179,076,540.24/513,074.60
  6. Step 6: Final answer
    x = 485,658.57

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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.