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Finding the Fourth Proportional to 495,388.34, 683,649.33 and 291,452.66

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Solution

The fourth proportional to 495,388.34, 683,649.33 and 291,452.66 is: 402,212.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,388.34 : 683,649.33 = 291,452.66 : x
  2. Step 2: Convert to fraction form
    495,388.34/683,649.33 = 291,452.66/x
  3. Step 3: Cross multiply
    495,388.34x = 683,649.33 × 291,452.66
  4. Step 4: Simplify right side
    495,388.34x = 199,251,415,735.72
  5. Step 5: Solve for x
    x = 199,251,415,735.72/495,388.34
  6. Step 6: Final answer
    x = 402,212.57

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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.