Home / 687,284.48-1,030,080.64-327,644.80

Finding the Fourth Proportional to 687,284.48, 1,030,080.64 and 327,644.80

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Solution

The fourth proportional to 687,284.48, 1,030,080.64 and 327,644.80 is: 491,063.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,284.48 : 1,030,080.64 = 327,644.80 : x
  2. Step 2: Convert to fraction form
    687,284.48/1,030,080.64 = 327,644.80/x
  3. Step 3: Cross multiply
    687,284.48x = 1,030,080.64 × 327,644.80
  4. Step 4: Simplify right side
    687,284.48x = 337,500,565,276.67
  5. Step 5: Solve for x
    x = 337,500,565,276.67/687,284.48
  6. Step 6: Final answer
    x = 491,063.85

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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.