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Finding the Fourth Proportional to 559,665.60, 772,339.28 and 305,016.79

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Solution

The fourth proportional to 559,665.60, 772,339.28 and 305,016.79 is: 420,923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,665.60 : 772,339.28 = 305,016.79 : x
  2. Step 2: Convert to fraction form
    559,665.60/772,339.28 = 305,016.79/x
  3. Step 3: Cross multiply
    559,665.60x = 772,339.28 × 305,016.79
  4. Step 4: Simplify right side
    559,665.60x = 235,576,446,826.58
  5. Step 5: Solve for x
    x = 235,576,446,826.58/559,665.60
  6. Step 6: Final answer
    x = 420,923.58

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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.