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Finding the Fourth Proportional to 554,993.70, 765,704.34 and 361,312.98

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Solution

The fourth proportional to 554,993.70, 765,704.34 and 361,312.98 is: 498,490.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,993.70 : 765,704.34 = 361,312.98 : x
  2. Step 2: Convert to fraction form
    554,993.70/765,704.34 = 361,312.98/x
  3. Step 3: Cross multiply
    554,993.70x = 765,704.34 × 361,312.98
  4. Step 4: Simplify right side
    554,993.70x = 276,658,916,884.33
  5. Step 5: Solve for x
    x = 276,658,916,884.33/554,993.70
  6. Step 6: Final answer
    x = 498,490.19

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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.