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Finding the Fourth Proportional to 512,006.80, 768,010.20 and 325,152.40

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Solution

The fourth proportional to 512,006.80, 768,010.20 and 325,152.40 is: 487,728.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,006.80 : 768,010.20 = 325,152.40 : x
  2. Step 2: Convert to fraction form
    512,006.80/768,010.20 = 325,152.40/x
  3. Step 3: Cross multiply
    512,006.80x = 768,010.20 × 325,152.40
  4. Step 4: Simplify right side
    512,006.80x = 249,720,359,754.48
  5. Step 5: Solve for x
    x = 249,720,359,754.48/512,006.80
  6. Step 6: Final answer
    x = 487,728.60

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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.