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Finding the Fourth Proportional to 851,163.32, 1,174,711.80 and 488,700.80

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Solution

The fourth proportional to 851,163.32, 1,174,711.80 and 488,700.80 is: 674,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,163.32 : 1,174,711.80 = 488,700.80 : x
  2. Step 2: Convert to fraction form
    851,163.32/1,174,711.80 = 488,700.80/x
  3. Step 3: Cross multiply
    851,163.32x = 1,174,711.80 × 488,700.80
  4. Step 4: Simplify right side
    851,163.32x = 574,082,596,429.44
  5. Step 5: Solve for x
    x = 574,082,596,429.44/851,163.32
  6. Step 6: Final answer
    x = 674,468.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.