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Finding the Fourth Proportional to 864,310.40, 1,296,465.60 and 365,609.60

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Solution

The fourth proportional to 864,310.40, 1,296,465.60 and 365,609.60 is: 548,414.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,310.40 : 1,296,465.60 = 365,609.60 : x
  2. Step 2: Convert to fraction form
    864,310.40/1,296,465.60 = 365,609.60/x
  3. Step 3: Cross multiply
    864,310.40x = 1,296,465.60 × 365,609.60
  4. Step 4: Simplify right side
    864,310.40x = 474,000,269,429.76
  5. Step 5: Solve for x
    x = 474,000,269,429.76/864,310.40
  6. Step 6: Final answer
    x = 548,414.40

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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.