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Finding the Fourth Proportional to 620,134.32, 855,827.64 and 344,524.47

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Solution

The fourth proportional to 620,134.32, 855,827.64 and 344,524.47 is: 475,467.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,134.32 : 855,827.64 = 344,524.47 : x
  2. Step 2: Convert to fraction form
    620,134.32/855,827.64 = 344,524.47/x
  3. Step 3: Cross multiply
    620,134.32x = 855,827.64 × 344,524.47
  4. Step 4: Simplify right side
    620,134.32x = 294,853,564,082.35
  5. Step 5: Solve for x
    x = 294,853,564,082.35/620,134.32
  6. Step 6: Final answer
    x = 475,467.26

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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.