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Finding the Fourth Proportional to 430,830.40, 646,245.60 and 341,600.80

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Solution

The fourth proportional to 430,830.40, 646,245.60 and 341,600.80 is: 512,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,830.40 : 646,245.60 = 341,600.80 : x
  2. Step 2: Convert to fraction form
    430,830.40/646,245.60 = 341,600.80/x
  3. Step 3: Cross multiply
    430,830.40x = 646,245.60 × 341,600.80
  4. Step 4: Simplify right side
    430,830.40x = 220,758,013,956.48
  5. Step 5: Solve for x
    x = 220,758,013,956.48/430,830.40
  6. Step 6: Final answer
    x = 512,401.20

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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.