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Finding the Fourth Proportional to 551,055.94, 760,456.83 and 309,338.98

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Solution

The fourth proportional to 551,055.94, 760,456.83 and 309,338.98 is: 426,887.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,055.94 : 760,456.83 = 309,338.98 : x
  2. Step 2: Convert to fraction form
    551,055.94/760,456.83 = 309,338.98/x
  3. Step 3: Cross multiply
    551,055.94x = 760,456.83 × 309,338.98
  4. Step 4: Simplify right side
    551,055.94x = 235,238,940,126.23
  5. Step 5: Solve for x
    x = 235,238,940,126.23/551,055.94
  6. Step 6: Final answer
    x = 426,887.59

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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.