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Finding the Fourth Proportional to 559,339.70, 771,884.78 and 304,690.95

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Solution

The fourth proportional to 559,339.70, 771,884.78 and 304,690.95 is: 420,471.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,339.70 : 771,884.78 = 304,690.95 : x
  2. Step 2: Convert to fraction form
    559,339.70/771,884.78 = 304,690.95/x
  3. Step 3: Cross multiply
    559,339.70x = 771,884.78 × 304,690.95
  4. Step 4: Simplify right side
    559,339.70x = 235,186,305,385.29
  5. Step 5: Solve for x
    x = 235,186,305,385.29/559,339.70
  6. Step 6: Final answer
    x = 420,471.33

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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.