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Finding the Fourth Proportional to 665,595.69, 918,508.55 and 363,791.85

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Solution

The fourth proportional to 665,595.69, 918,508.55 and 363,791.85 is: 502,025.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,595.69 : 918,508.55 = 363,791.85 : x
  2. Step 2: Convert to fraction form
    665,595.69/918,508.55 = 363,791.85/x
  3. Step 3: Cross multiply
    665,595.69x = 918,508.55 × 363,791.85
  4. Step 4: Simplify right side
    665,595.69x = 334,145,922,826.36
  5. Step 5: Solve for x
    x = 334,145,922,826.36/665,595.69
  6. Step 6: Final answer
    x = 502,025.37

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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.