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Finding the Fourth Proportional to 408,830.40, 613,245.60 and 346,622.40

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Solution

The fourth proportional to 408,830.40, 613,245.60 and 346,622.40 is: 519,933.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,830.40 : 613,245.60 = 346,622.40 : x
  2. Step 2: Convert to fraction form
    408,830.40/613,245.60 = 346,622.40/x
  3. Step 3: Cross multiply
    408,830.40x = 613,245.60 × 346,622.40
  4. Step 4: Simplify right side
    408,830.40x = 212,564,661,661.44
  5. Step 5: Solve for x
    x = 212,564,661,661.44/408,830.40
  6. Step 6: Final answer
    x = 519,933.60

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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.