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Finding the Fourth Proportional to 512,966.40, 768,283.20 and 324,009.60

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Solution

The fourth proportional to 512,966.40, 768,283.20 and 324,009.60 is: 485,277.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,966.40 : 768,283.20 = 324,009.60 : x
  2. Step 2: Convert to fraction form
    512,966.40/768,283.20 = 324,009.60/x
  3. Step 3: Cross multiply
    512,966.40x = 768,283.20 × 324,009.60
  4. Step 4: Simplify right side
    512,966.40x = 248,931,132,318.72
  5. Step 5: Solve for x
    x = 248,931,132,318.72/512,966.40
  6. Step 6: Final answer
    x = 485,277.66

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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.