Home / 869,499.28-1,199,893.80-487,524.88

Finding the Fourth Proportional to 869,499.28, 1,199,893.80 and 487,524.88

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Solution

The fourth proportional to 869,499.28, 1,199,893.80 and 487,524.88 is: 672,775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,499.28 : 1,199,893.80 = 487,524.88 : x
  2. Step 2: Convert to fraction form
    869,499.28/1,199,893.80 = 487,524.88/x
  3. Step 3: Cross multiply
    869,499.28x = 1,199,893.80 × 487,524.88
  4. Step 4: Simplify right side
    869,499.28x = 584,978,080,857.74
  5. Step 5: Solve for x
    x = 584,978,080,857.74/869,499.28
  6. Step 6: Final answer
    x = 672,775.81

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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.