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Finding the Fourth Proportional to 512,076.60, 768,114.90 and 352,644.30

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Solution

The fourth proportional to 512,076.60, 768,114.90 and 352,644.30 is: 528,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,076.60 : 768,114.90 = 352,644.30 : x
  2. Step 2: Convert to fraction form
    512,076.60/768,114.90 = 352,644.30/x
  3. Step 3: Cross multiply
    512,076.60x = 768,114.90 × 352,644.30
  4. Step 4: Simplify right side
    512,076.60x = 270,871,341,230.07
  5. Step 5: Solve for x
    x = 270,871,341,230.07/512,076.60
  6. Step 6: Final answer
    x = 528,966.45

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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.