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Finding the Fourth Proportional to 766,893.60, 1,150,329.60 and 346,168.80

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Solution

The fourth proportional to 766,893.60, 1,150,329.60 and 346,168.80 is: 519,248.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,893.60 : 1,150,329.60 = 346,168.80 : x
  2. Step 2: Convert to fraction form
    766,893.60/1,150,329.60 = 346,168.80/x
  3. Step 3: Cross multiply
    766,893.60x = 1,150,329.60 × 346,168.80
  4. Step 4: Simplify right side
    766,893.60x = 398,208,217,236.48
  5. Step 5: Solve for x
    x = 398,208,217,236.48/766,893.60
  6. Step 6: Final answer
    x = 519,248.32

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Double scale
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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.