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Finding the Fourth Proportional to 512,510.10, 768,765.15 and 484,953.90

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Solution

The fourth proportional to 512,510.10, 768,765.15 and 484,953.90 is: 727,430.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,510.10 : 768,765.15 = 484,953.90 : x
  2. Step 2: Convert to fraction form
    512,510.10/768,765.15 = 484,953.90/x
  3. Step 3: Cross multiply
    512,510.10x = 768,765.15 × 484,953.90
  4. Step 4: Simplify right side
    512,510.10x = 372,815,657,676.59
  5. Step 5: Solve for x
    x = 372,815,657,676.59/512,510.10
  6. Step 6: Final answer
    x = 727,430.85

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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.