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Finding the Fourth Proportional to 430,836.40, 646,254.60 and 341,606.80

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Solution

The fourth proportional to 430,836.40, 646,254.60 and 341,606.80 is: 512,410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,836.40 : 646,254.60 = 341,606.80 : x
  2. Step 2: Convert to fraction form
    430,836.40/646,254.60 = 341,606.80/x
  3. Step 3: Cross multiply
    430,836.40x = 646,254.60 × 341,606.80
  4. Step 4: Simplify right side
    430,836.40x = 220,764,965,891.28
  5. Step 5: Solve for x
    x = 220,764,965,891.28/430,836.40
  6. Step 6: Final answer
    x = 512,410.20

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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.