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Finding the Fourth Proportional to 559,209.51, 771,778.62 and 317,569.73

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Solution

The fourth proportional to 559,209.51, 771,778.62 and 317,569.73 is: 438,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,209.51 : 771,778.62 = 317,569.73 : x
  2. Step 2: Convert to fraction form
    559,209.51/771,778.62 = 317,569.73/x
  3. Step 3: Cross multiply
    559,209.51x = 771,778.62 × 317,569.73
  4. Step 4: Simplify right side
    559,209.51x = 245,093,524,114.28
  5. Step 5: Solve for x
    x = 245,093,524,114.28/559,209.51
  6. Step 6: Final answer
    x = 438,285.69

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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.