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Finding the Fourth Proportional to 559,644.87, 772,287.39 and 304,990.59

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Solution

The fourth proportional to 559,644.87, 772,287.39 and 304,990.59 is: 420,874.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,644.87 : 772,287.39 = 304,990.59 : x
  2. Step 2: Convert to fraction form
    559,644.87/772,287.39 = 304,990.59/x
  3. Step 3: Cross multiply
    559,644.87x = 772,287.39 × 304,990.59
  4. Step 4: Simplify right side
    559,644.87x = 235,540,386,725.66
  5. Step 5: Solve for x
    x = 235,540,386,725.66/559,644.87
  6. Step 6: Final answer
    x = 420,874.74

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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.